Update to Angular 21

[slifty]

This PR updates Angular to v21 (the current major release). It also bumps related dependencies to versions that also support Angular 21.

This is now based on the branch reflected in #896 -- we should smoke test this to cover both changes, but this should be merged second.

Resolves #869

[slifty]

We should definitely give this a full smoke test once the code-level review is finished.

[codecov]

Codecov Report

❌ Patch coverage is 75.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 47.70%. Comparing base (ae51380) to head (28b87cd).

Files with missing lines	Patch %	Lines
...rowser/components/file-list/file-list.component.ts	0.00%	1 Missing ⚠️
...rc/app/shared/directives/bg-image-src.directive.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                    Coverage Diff                    @@
##           895-package-bootstrap     #889      +/-   ##
=========================================================
- Coverage                  47.85%   47.70%   -0.16%     
=========================================================
  Files                        351      351              
  Lines                      11306    11311       +5     
  Branches                    1892     1893       +1     
=========================================================
- Hits                        5411     5396      -15     
- Misses                      5705     5724      +19     
- Partials                     190      191       +1     

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[aasandei-vsp]

I tried to run this locally and it didn't work for me. I got errors on both npm i and build web-app.
Could you please provide some step-by-step for making it work locally? Maybe I am doing smth wrong?

Also, in the code, there are still some *ngIfs present in src/stories/header.component.ts. Wouldn't this break when running the storybook? I can check it once I can make the branch work on my local.

[slifty]

@aasandei-vsp I've rebased this on the bootstrap branch; could you try again?

For me, from devenv, I run:

docker compose build web-app and then docker compose up -d

---

Regarding *ngIf I believe it works, just is deprecated. That said good catch and I'll update that to the modern syntax now.

[aasandei-vsp]

After some struggle with my own environment, I managed to test this. Sorry for the delay.

LGTM

[slifty]

Merging this into the bootstrap upgrade