Migration questionnaire asks if property was changed when extending type with a new property

- EdgeDB Version: 4.5+641a8f3
- EdgeDB CLI Version: EdgeDB CLI 4.1.0+a8fe4d7
- OS Version: macOS 14.0

When migrating to extend a type with a new property, I'm asked if I altered the property on that type. This question doesn't make sense because the property did not exist on the type before this migration to extend it, adding the property.

Answering `y` appears to result in migration to the desired schema, but the question doesn't make sense in the context.

Steps to Reproduce:

1. Migrate this schema:
```esdl
module default {
type Person;
}
```
2. Update the schema to this and migrate:
```esdl
module default {
type Person extending HasMoney;
abstract type HasMoney {
required pounds: int64;
}
}
```

Output:
```
did you create scalar type 'default::Money'? [y,n,l,c,b,s,q,?]
> y
did you create object type 'default::HasMoney'? [y,n,l,c,b,s,q,?]
> y
did you alter object type 'default::Person'? [y,n,l,c,b,s,q,?]
> y
Please specify an expression to populate existing objects in order to make property 'pounds' of object type 'default::Person' required:
fill_expr> 0
did you alter property 'pounds' of object type 'default::Person'? [y,n,l,c,b,s,q,?]
>
```

Start by reproducing the migration with the two ESDL schemas in the issue and observe the CLI questionnaire, including the required-property fill expression. No implementation file or test is named; done means extending Person with HasMoney no longer prompts whether the newly inherited pounds property was altered.

Written by the indexing model from the issue text.