fix: remove BrowserDynamicTestingModule override

[geromegrignon]

Description

Remove the unused BrowserTestingModule override

Related issues

Fixes #12

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that changes the public API)
• Documentation only
• Refactor, test, or chore (no user-facing change)

Breaking changes

None

Test plan

• npm run build
• npm test
• npm run lint
• Verified in the demo app (if applicable)

Checklist

• Issue discussed or bug clearly described (link issue when applicable)
• Tests added or updated for behavioral changes
• Documentation updated (README, JSDoc, migration notes as needed)
• Public API changes documented; breaking changes called out
• CHANGELOG updated (if the repository maintains one and the change is user-facing)
• Commit messages follow Conventional Commits
• I agree to follow the OpenNG Foundation Code of Conduct

Additional context

[Copilot]

Pull request overview

This PR removes references to BrowserDynamicTestingModule from Spectator factory helpers so the library no longer pulls in @angular/platform-browser-dynamic/testing, addressing the Angular 20+ deprecation and the missing dependency error reported in #12.

Changes:

• Removed BrowserDynamicTestingModule imports from component/host/pipe/directive factory helpers.
• Removed no-op TestBed.overrideModule(BrowserDynamicTestingModule, {}) calls from TestBed setup paths.
• Simplified template override paths to rely on TestBed.overrideComponent(...) directly.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
projects/spectator/src/lib/spectator/create-factory.ts	Removes the no-op override of BrowserDynamicTestingModule during component factory setup to avoid pulling platform-browser-dynamic/testing.
projects/spectator/src/lib/spectator-pipe/create-factory.ts	Drops BrowserDynamicTestingModule usage and uses TestBed.overrideComponent for host template overrides without the extra module override.
projects/spectator/src/lib/spectator-host/create-factory.ts	Removes the no-op BrowserDynamicTestingModule override from host factory TestBed initialization.
projects/spectator/src/lib/spectator-directive/create-factory.ts	Removes BrowserDynamicTestingModule from directive factory and keeps host template override via TestBed.overrideComponent.

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[Martinspire]

Any chance we can get this merged soon?

[elmarbeckmann]

+1