458546 Fix Move Tool refactor
The nested recursion over m_nodes means that the strategies will be executed at least twice for each node. This is inconsistent with the rest of commit 4a427ee6 of @dkazakov 's, so let's fix that.
Test Plan
Follow Halla's repro in the bug. Two or more layers need to be selected in order to cause the crash, due to the quadratic recursion.
Formalities Checklist
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