feat: enhance BarBounce and BarUtils for better handling of animated …

[xile611]

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[Copilot]

Pull request overview

Updates bar-related custom animations in vstory-animate to better handle normalized bar rect attributes during animation, and adds unit tests to prevent regressions.

Changes:

• Adjusts createCollapsedBarRect to produce clearer collapsed start rects (explicit width/height handling).
• Fixes BarBounce orientation handling after rect normalization and computes animated width/height during updates.
• Adds unit tests covering null-from rects, vertical collapse behavior, and horizontal-mode normalization.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
packages/vstory-animate/src/customAnimates/bar-utils.ts	Refines collapsed bar rect generation for vertical/horizontal cases.
packages/vstory-animate/src/customAnimates/bar-bounce.ts	Uses a stored vertical/horizontal mode, updates animated width/height, and updates target tags.
packages/vstory-animate/tests/unit/index.test.ts	Adds coverage for BarBounce orientation/collapse behavior and update side effects.

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[Copilot]

onUpdate mutates this.target.attribute directly and then calls addUpdatePositionTag / addUpdateShapeAndBoundsTag. This bypasses the public setAttributes API used elsewhere (including onBind) and introduces a hard dependency on internal target methods that may not exist for all render targets. Prefer this.target.setAttributes(out) (or rely on the base ACustomAnimate update mechanism) so dirty flags/tags are handled consistently.

Suggested change

	Object.assign(this.target.attribute, out);
	this.target.addUpdatePositionTag();
	this.target.addUpdateShapeAndBoundsTag();
	this.target.setAttributes(out);