The for loop tracking function doesn't allow references to local template variables, aside from `$index` and the item which are passed in as parameters. We enforce this by rewriting all variable references to the components scope. The problem is that the logic that rewrites the references first walks the view tree and then checks if the variable is `$index` or the item. This is problematic in nested for loops, because it'll find the `$index` of the parent. These changes resolve the issue by checking for `$index` and the item first. Fixes #53600. PR Close #53604
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