fix(animation): carousel fails to scroll to bottom with fractional row heights

[dajiaohuang]

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• Bug fix
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• TypeScript definition update
• Bundle size optimization
• Performance optimization
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🔗 Related issue link

fix #4812

💡 Background and solution

When using TableCarouselAnimationPlugin with defaultRowHeight set to a decimal value (e.g., 34.666666666666664), the animation would fail to scroll to the bottom of the table and loop incorrectly.

Root cause:

1. scrollToRow only scheduled post-animation scroll position correction when the target row was an integer. For fractional scroll targets (used during animation for smooth sub-row positioning), the correction timer was skipped, leaving the final scrollTop slightly off due to cumulative Math.floor rounding during animation frames.
2. The carousel plugin relied only on screenTopRow !== this.row to detect end-of-scroll, which could fail with fractional row positions when floating-point accumulation error caused a mismatch even though scrolling completed.
3. Animateaaa.onUpdate used Math.floor for intermediate scroll offsets, causing a downward pixel drift over the animation duration.

Fix:

1. Always schedule post-animation scroll correction after animation completes (remove integer-only condition).
2. Add post-animation correction to scrollToCol for consistency with scrollToRow.
3. Change Math.floor to Math.round in Animateaaa.onUpdate to minimize cumulative drift during animation.
4. Add explicit boundary check (this.row >= this.table.rowCount - 1 and col equivalent) in the carousel plugin to reliably reset to start when reaching end regardless of fractional drift.

📝 Changelog

Language	Changelog
🇺🇸 English	Fix carousel animation plugin not scrolling to bottom when defaultRowHeight is a non-integer value
🇨🇳 Chinese	修复动画插件在行高为小数时无法滚动到最底部的问题

☑️ Self-Check before Merge

⚠️ Please check all items below before requesting a reviewing. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed