fix(signals): patch state methods do not correctly resolve generic co…

[ivashikhmin]

…llection names withEntities

Ensures type-safety of named entity collections with patchState helpers

fixes #4638

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] The commit message follows our guidelines: https://github.com/ngrx/platform/blob/main/CONTRIBUTING.md#commit
• [x] Tests for the changes have been added (for bug fixes / features)
• [ ] Documentation has been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

Closes #4638

What is the new behavior?

Collection extends string generic could be used to make features with named entity collections (withEntities) and state updaters, e.g. addEntity, in type-safe manner and allow method naming like in ngrx-toolkit withDataService

Does this PR introduce a breaking change?

[ ] Yes
[x] No

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[timdeschryver]

We'll take a look at this. The typing could be simplified, which we'll tackle in a different PR.