fix(runtime-core): hydration should not be performed during the HMR reload process(fix #7706) #8170
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…eload process(fix vuejs#7706)
edison1105
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Close #7706.
During HMR reload, the div element is unmounted. However, in SSR mode, the
mountComponentprocess does not remount the div element but hydrates it instead, causing the issue of the div element is deleted.