Fix/rn svg image extra render - #2562
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hiyuki
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Aug 3, 2026
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背景
mpx-image在处理 SVG 图片加载时，会在容器布局尺寸尚未就绪的情况下提前调用setImageHeight，产生一次无效 render。同时，
onSvgLoad与普通图片的getImageSize回调中存在重复的图片尺寸同步逻辑。修改内容
state.currentsetImageHeight，避免额外 renderupdateImageSize，复用 SVG 和普通图片的尺寸更新流程