Resolve type vars when inferring borrow kinds for upvars #21551
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As part of rust-lang#20432, upvar checking is now moved out of regionck to its own pass and before regionck. But regionck has some type resolution of it own. Without them, now separated upvar checking may be tripped over by residue `ty_infer`. Closes rust-lang#21306
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As part of #20432, upvar checking is now moved out of regionck to its
own pass and before regionck. But regionck has some type resolution of
its own. Without them, now separated upvar checking may be tripped over
by residue
ty_infer.Closes #21306