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e8289d801c
Properly check that array length is valid type during built-in unsizing in index This results in duplicated errors, but this class of errors is not new; in general, we aren't really equipped to detect cases where a WF error due to a field type would be shadowed by the parent struct of that field also not being WF. This also adds a note for these types of mismatches to make it clear that this is due to an array type. Fixes #134352 r? boxyuwu