[9.0] Hold store reference in InternalEngine#performActionWithDirectoryReader(...) #123242
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Backport #123010 to 9.0 branch.
This method gets called from
InternalEngine#resolveDocVersion(...), which gets during indexing (viaInternalEngine.index(...)).When
InternalEngine.index(...)gets invoked, the InternalEngine only ensures that it holds a ref to the engine via Engine#acquireEnsureOpenRef(), but this doesn't ensure whether it holds a reference to the store.Closes #122974