Some deleted public classes are not listed as breaking changes from efcore 8 -> 9

### Type of issue

Missing information

### Description

It seems there have been some public classes that were deleted. It seems like these should be listed as breaking changes, possibly along with suggestions for the replacement in efcore 9.

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Example 1:

`public` class `Microsoft.EntityFrameworkCore.Storage.Json.JsonCollectionReaderWriter` was deleted.

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Example 2:

`public` class `Microsoft.EntityFrameworkCore.ChangeTracking.ListComparer` was deleted (and seemingly replaced with 3 more specific comparers? i.e. `ListOfValueTypesComparer`, but has different generic specifiers, so is not a direct replacement?)

### Page URL

https://learn.microsoft.com/en-us/ef/core/what-is-new/ef-core-9.0/breaking-changes

### Content source URL

https://github.com/dotnet/EntityFramework.Docs/blob/main/entity-framework/core/what-is-new/ef-core-9.0/breaking-changes.md

### Document Version Independent Id

e998ccbd-d125-7bf5-3232-f97447496572

### Article author

@ajcvickers