don't construct array type for already typed nkBracket node
#24224
+72
−22
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fixes #23010, split from #24195
When resemming bracket nodes, the compiler currently unconditionally makes a new node with an array type based on the node. However the VM can generate bracket nodes with
seqtypes, which this erases. To fix this, if a bracket node already has a type, we still resem the bracket node, but don't construct a new type for it, instead using the type of the original node.A version of this was rejected that didn't resem the node at all if it was typed, but I can't find it. The difference with this one is that the individual elements are still resemmed.
This should fix the break caused by #24184 so we could redo it after this PR but it might still have issues, not to mention the related pre-existing issues like #22793, #12559 etc.