Angular 16 upgrade - Rxjs and Ngx chips version upgrade

[JeraldJF]

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[Copilot]

Pull Request Overview

This PR upgrades RxJS from version 6.5.5 to 7.8.1 and ngx-chips from 2.2.2 to 3.0.0 as part of the Angular 16 upgrade. The changes primarily address stricter type requirements in RxJS 7, where Subject.next() and ReplaySubject.next() no longer accept being called without parameters when typed as Subject<void>. However, the implementation uses a problematic workaround by changing types to Subject<void | any> and passing hardcoded strings like "LOADING" instead of using proper TypeScript types.

Key changes:

• Package version bumps for RxJS (6.5.5 → 7.8.1) and ngx-chips (2.2.2 → 3.0.0)
• Type annotations added to Observable callbacks to satisfy RxJS 7's stricter typing
• Workaround implementations for void-typed Subjects using void | any union types
• Removal of katex references from angular.json build configuration

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
package.json	Updates RxJS to 7.8.1 and ngx-chips to 3.0.0
lazzy-load-script.service.ts	Changes ReplaySubject type to void | any and passes "LOADING" string to next()
util.service.ts	Changes Subject type to void | any and passes "LOADING" string to next()
user-location.component.ts	Adds type annotations to forkJoin callbacks (contains a bug in error handler)
telemetry-import.component.ts	Correctly types Subject as Subject<void>
content-manager.component.ts	Correctly types Subject as Subject<void>
quml-player-v2.service.ts	Adds type annotation to forkJoin map callback
report.service.ts	Adds type annotation to forkJoin mergeMap callback
report.service.spec.ts	Adds type annotations to observable subscribe callbacks in tests
report.component.ts	Adds type annotation to map callback
angular.json	Removes katex CSS and JS file references from build configuration

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