fix: set transform-origin in each keyframe

[xiaoiver]

目前 animations 保存在 context 中，希望通过如下方式让图表停在任意动画时刻，便于截图或者制作图表动画时间轴：

context.animations?.forEach((animation) => {
  animation.pause();
  animation.currentTime = currentTime;
});

因此 transformOrigin 需要在 keyframe 中设置，这样才能通过 play 方法重复播放。否则如果通过 setOrigin 这样的 API 在动画前后设置 transformOrigin，再次播放时就没法执行这段逻辑了。

[coveralls]

Pull Request Test Coverage Report for Build 6624461771

• 4 of 8 (50.0%) changed or added relevant lines in 8 files are covered.
• 9 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+0.07%) to 88.244%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/animation/scaleOutX.ts	0	1	0.0%
src/animation/scaleOutY.ts	0	1	0.0%
src/animation/zoomIn.ts	0	1	0.0%
src/animation/zoomOut.ts	0	1	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/animation/scaleOutX.ts	2	11.76%
src/animation/scaleOutY.ts	2	11.76%
src/animation/zoomOut.ts	2	7.69%
src/animation/zoomIn.ts	3	7.69%

Totals
Change from base Build 6585570733:	0.07%
Covered Lines:	10032
Relevant Lines:	11003

---

💛 - Coveralls