feat: upgrade to Angular v21.1.0

[hoermillerj]

📦 upgrades Angular and related dependencies to v21.1.0.
🐛 Removes NbTable providers since these are not needed.

Please read and mark the following check list before creating a pull request:

• I read and followed the CONTRIBUTING.md guide.

Short description of what this resolves:

Upgrades Angular and related dependencies to v21.1.0 and removes the deprecated _VIEW_REPEATER_STRATEGY that was removed from the latest @angular/cdk.

[hoermillerj]

@denStrigo Can you have a look? I don't know why the PR checks are failing. I ran npm ci locally and had no issues.

[hoermillerj]

@denStrigo I have added an override for @angular/compiler to @angular/fire, which resolves the npm ci issues. However the PR checks seem a bit flaky. I ran the packages build commands locally and they build fine.

[soysergiogonza]

@hoermillerj Hi, you have news for this fix ?

[hoermillerj]

@soysergiogonza sorry, no news so far. I recently added additional comits to the PR in order to fix some of the checks. I cannot reproduce the remaining failing pr checks. Everything works fine on my end and so far no one from the Akveo team has reacted to this pr. Last time I created the pr for the support for Angular v. 21.0.0 I had to remove changes I made to the unit tests, since it contained to many changes for a code review. Thats why I did not want to introduce to many code changes.

[soysergiogonza]

Thanks

[hoermillerj]

@denStrigo could you please have a look at the PR?

I updated the minimum required RxJS 7 minor version to 7.5.5 since this was the release where the types were added. This was causing the PR check build-packages-rxjs-7 to fail.

The unit tests would require a major rework due to changes in the change detection. They related to the Error: NG0100: ExpressionChangedAfterItHasBeenCheckedError.

The packages-smoke PR check would require me to update the packages in the packages-smoke project which uses @nguniversal/express-engine. This package was moved into the @angular/cli.