Renaming schema/microschema does not update allows in field definitions

## Gentics Mesh Version, operating system, or hardware.
- v0.21.1

## Problem
When renaming a schema or microschema, the allow property of all schema field definitions are not updated accordingly. This leads to fields that allow adding nodes of non-existing schemas which messes up the Mesh-UI.

## Reproducer
1. Create this schema:
```json
{
"name": "test",
"fields": [
{
"name": "ref",
"type": "node",
"allow": [
"folder"
]
}
]
}
```

2. Rename the folder schema

## Expected behaviour and actual behaviour
I expected the name of the allowed schema to be changed as well. Currently this does not happen.

Reproduce the issue by creating the schema from the example and renaming the folder schema, then inspect the schema and microschema rename handling alongside field definitions' allow values. Done means renaming a schema updates every affected allow reference so no field points to a nonexistent schema.

Written by the indexing model from the issue text.