fix(@angular/build): add animateMotion, animateTransform, and feBlend etc. to valid self-closing elements

[nosaku]

fix(@angular/build): add animateMotion, animateTransform, and feBlend etc. to valid self-closing elements

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?

Issue Number: 28502

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Other information

[alan-agius4]

Thanks for this.

[clydin]

The changes were merged into the following branches: main, 18.2.x

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