Fix DualIterMap context value handling
#2569
Merged
+16
−0
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After upgrading an application to 12.1, a comparison error occurred due to a different optimization uncovering a bug in
DualIterMap.value. The context value is taken from the first iteration and applied to the second, but it is not restored before continuing the first iteration.This change fixes that behavior and adds two tests with minimal queries reproducing the issue.