fix(@schematics/angular): default components to OnPush change detection

[cexbrayat]

PR Checklist

Please check to confirm your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/angular/angular-cli/blob/main/CONTRIBUTING.md#-commit-message-guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• 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?

The CLI adds Eager to every new component

What is the new behavior?

This defaults the change detection to OnPush, and omits changeDetection in the decorator if the strategy is OnPush

Does this PR introduce a breaking change?

• Yes
• No

Other information

[alan-agius4]

LGTM, thanks

[gemini-code-assist]

Code Review

This pull request modifies the Angular component schematic to default the change detection strategy to OnPush. Several test descriptions and assertions need updates to reflect the change to Eager change detection in specific test cases.

[alan-agius4]

This PR was merged into the repository. The changes were merged into the following branches:

• main: 6572a69

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