Notice: Undefined offset: 19 in vendor/magento/data-migration-tool/src/Migration/Step/Eav/Data.php on line 452

### Preconditions
1. M1.9.4.5
2. M2.4.3-p1

### Steps to reproduce
You need a Magento installation with additional entries in eav_entity_type and attributes in eav_attribute linked to a deleted eav_entity_type

In my case in the table eav_entity_type on M1 I have this dataset

```

+--------------+--------------------+------------------------------+------------------------------+-----------------------+------------------+---------------+---------------+----------------+------------------------+----------------------------+-------------------+--------------------+------------------+--------------------------+----------------------------------------+
|entity_type_id|entity_type_code |entity_model |attribute_model |entity_table |value_table_prefix|entity_id_field|is_data_sharing|data_sharing_key|default_attribute_set_id|increment_model |increment_per_store|increment_pad_length|increment_pad_char|additional_attribute_table|entity_attribute_collection |
+--------------+--------------------+------------------------------+------------------------------+-----------------------+------------------+---------------+---------------+----------------+------------------------+----------------------------+-------------------+--------------------+------------------+--------------------------+----------------------------------------+
|1 |customer |customer/customer |customer/attribute |customer/entity |NULL |NULL |1 |default |1 |eav/entity_increment_numeric|0 |8 |0 |customer/eav_attribute |customer/attribute_collection |
|2 |customer_address |customer/address |customer/attribute |customer/address_entity| | |1 |default |2 | |0 |8 |0 |customer/eav_attribute |customer/address_attribute_collection |
|3 |customer_payment | | |customer/entity | | |1 |default |3 | |0 |8 |0 | | |
|4 |order |sales/order | |sales/order | | |1 |default |18 |eav/entity_increment_numeric|1 |8 |0 | | |
|5 |order_status | | |sales/order | | |1 |default |0 | |0 |8 |0 | | |
|6 |order_address |sales/order_address | |sales/order_entity | | |1 |default |20 | |0 |8 |0 | | |
|7 |order_item |sales/order_item | |sales/order_entity | | |1 |default |21 | |0 |8 |0 | | |
|8 |order_payment |sales/order_payment | |sales/order_entity | | |1 |default |22 | |0 |8 |0 | | |
|9 |catalog_category |catalog/category |catalog/resource_eav_attribute|catalog/category | | |0 |default |12 | |0 |8 |0 |catalog/eav_attribute |catalog/category_attribute_collection |
|10 |catalog_product |catalog/product |catalog/resource_eav_attribute|catalog/product |NULL |NULL |0 |default |9 |NULL |0 |8 |0 |catalog/eav_attribute |catalog/product_attribute_collection |
|11 |quote |sales/quote | |sales/quote | | |1 |default |23 | |0 |8 |0 | | |
|12 |quote_address |sales/quote_address | |sales/quote_address | | |1 |default |24 | |0 |8 |0 | | |
|13 |quote_address_rate |sales/quote_address_rate | |sales/quote_entity | | |1 |default |25 | |0 |8 |0 | | |
|14 |quote_address_item |sales/quote_address_item | |sales/quote_entity | | |1 |default |26 | |0 |8 |0 | | |
|15 |quote_item |sales/quote_item | |sales/quote_item | | |1 |default |27 | |0 |8 |0 | | |
|16 |quote_payment |sales/quote_payment | |sales/quote_entity | | |1 |default |28 | |0 |8 |0 | | |
|17 |order_status_history|sales/order_status_history | |sales/order_entity | | |1 |default |29 | |0 |8 |0 | | |
|18 |invoice |sales/order_invoice | |sales/order_entity | | |1 |default |30 |eav/entity_increment_numeric|1 |8 |0 | | |
|20 |invoice_item |sales/order_invoice_item | |sales/order_entity | | |1 |default |32 | |0 |8 |0 | | |
|22 |invoice_shipment | | |sales/invoice | | |1 |default |34 | |0 |8 |0 | | |
|23 |invoice_comment |sales/order_invoice_comment | |sales/order_entity | | |1 |default |50 | |0 |8 |0 | | |
|24 |shipment |sales/order_shipment | |sales/order_entity | | |1 |default |51 |eav/entity_increment_numeric|1 |8 |0 | | |
|25 |shipment_item |sales/order_shipment_item | |sales/order_entity | | |1 |default |52 | |0 |8 |0 | | |
|26 |shipment_comment |sales/order_shipment_comment | |sales/order_entity | | |1 |default |53 | |0 |8 |0 | | |
|27 |shipment_track |sales/order_shipment_track | |sales/order_entity | | |1 |default |54 | |0 |8 |0 | | |
|28 |creditmemo |sales/order_creditmemo | |sales/order_entity | | |1 |default |55 |eav/entity_increment_numeric|1 |8 |0 | | |
|29 |creditmemo_item |sales/order_creditmemo_item | |sales/order_entity | | |1 |default |56 | |0 |8 |0 | | |
|30 |creditmemo_comment |sales/order_creditmemo_comment| |sales/order_entity | | |1 |default |57 | |0 |8 |0 | | |
|31 |m_filter |mana_filters/filter | |mana_filters/filter | | |1 |default |58 | |0 |8 |0 |mana_core/attribute |mana_filters/filter_attribute_collection|
+--------------+--------------------+------------------------------+------------------------------+-----------------------+------------------+---------------+---------------+----------------+------------------------+----------------------------+-------------------+--------------------+------------------+--------------------------+----------------------------------------+
```

Notice the missing entity_type_id = 19 on this table.

However on eav_attribute table I have these attributes existing on the missing entity_type_id

```
+------------+--------------+-------------------+---------------+--------------------------------------------+------------+-------------+--------------+--------------+--------------+--------------+------------+-----------+---------------+-------------+---------+----+
|attribute_id|entity_type_id|attribute_code |attribute_model|backend_model |backend_type|backend_table|frontend_model|frontend_input|frontend_label|frontend_class|source_model|is_required|is_user_defined|default_value|is_unique|note|
+------------+--------------+-------------------+---------------+--------------------------------------------+------------+-------------+--------------+--------------+--------------+--------------+------------+-----------+---------------+-------------+---------+----+
|434 |19 |address_type |NULL | |varchar | | |text | |NULL | |1 |0 | |0 | |
|442 |19 |city |NULL | |varchar | | |text | |NULL | |1 |0 | |0 | |
|440 |19 |company |NULL | |varchar | | |text | |NULL | |1 |0 | |0 | |
|446 |19 |country_id |NULL | |varchar | | |text | |NULL | |1 |0 | |0 | |
|436 |19 |customer_address_id|NULL | |int | | |text | |NULL | |1 |0 | |0 | |
|435 |19 |customer_id |NULL | |int | | |text | |NULL | |1 |0 | |0 | |
|437 |19 |email |NULL | |varchar | | |text | |NULL | |1 |0 | |0 | |
|448 |19 |fax |NULL | |varchar | | |text | |NULL | |1 |0 | |0 | |
|438 |19 |firstname |NULL | |varchar | | |text | |NULL | |1 |0 | |0 | |
|439 |19 |lastname |NULL | |varchar | | |text | |NULL | |1 |0 | |0 | |
|433 |19 |order_address_id |NULL | |int | | |text | |NULL | |1 |0 | |0 | |
|432 |19 |parent_id |NULL |sales_entity/invoice_attribute_backend_child|static | | |text | |NULL | |1 |0 | |0 | |
|445 |19 |postcode |NULL | |varchar | | |text | |NULL | |1 |0 | |0 | |
|443 |19 |region |NULL | |varchar | | |text | |NULL | |1 |0 | |0 | |
|444 |19 |region_id |NULL | |int | | |text | |NULL | |1 |0 | |0 | |
|441 |19 |street |NULL | |varchar | | |text | |NULL | |1 |0 | |0 | |
|447 |19 |telephone |NULL | |varchar | | |text | |NULL | |1 |0 | |0 | |
+------------+--------------+-------------------+---------------+--------------------------------------------+------------+-------------+--------------+--------------+--------------+--------------+------------+-----------+---------------+-------------+---------+----+

```

In this part

$this->mapEntityTypeIdsDestOldNew has in my case a map of entity_ids without 19 in it. So it will try to migrate the attribute to a non-existing entity_id

```
{
"1": "1",
"2": "2",
"3": "3",
"4": "4",
"5": "5",
"6": "6",
"7": "7",
"8": "8",
"9": "9",
"10": "10",
"11": "11",
"12": "12",
"13": "13",
"14": "14",
"15": "15",
"16": "16",
"17": "17",
"18": "18",
"20": "20",
"22": "22",
"23": "23",
"24": "24",
"25": "25",
"26": "26",
"27": "27",
"28": "28",
"29": "29",
"30": "30",
"31": "31"
}
```

Basically the data migration tool is trying to migrate attributes linked to an entity_type_id that was deleted. M1 wasn't cleaning the attributes up when the entity_type was removed. So it ends up in that state and throws an error

` Notice: Undefined offset: 19 in vendor/magento/data-migration-tool/src/Migration/Step/Eav/Data.php on line 452`

### Expected result
Migration proceeds

### Actual result
` Notice: Undefined offset: 19 in vendor/magento/data-migration-tool/src/Migration/Step/Eav/Data.php on line 452`

### Additional notes

Inspect vendor/magento/data-migration-tool/src/Migration/Step/Eav/Data.php around line 452 and reproduce the migration with the EAV tables described in the issue. Trace the dataset containing attributes linked to a deleted entity type; done means the migration completes without the undefined-offset notice.

Written by the indexing model from the issue text.