Summary

Improve performance of code-splitting

see following module-graph

if module other has a lots of sub modules, we can avoid revisit those modules if minAvailableModules stays the same

Current behavior

module a dyn imports module b, buildChunkGraph will first create chunk a for module a, fills chunk a, then create chunk b for module b, fills chunk b.

if module b has another parent, then chunk b will be outdated and will be visited again, and fills chunk b again. But if chunk b has no minAvailableModules changes, we can skip visiting it, as it won't have any differences

see webpack/webpack#18730

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).