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Fix `VF2PostLayout` with uncoupled qubits in `strict_direction=True` (#14998) (#15001) When `VF2PostLayout` is set in strict mode, we have to include even active but uncoupled qubits in the interaction graph, because of the semantic constraints. We need to limit the number of these uncoupled qubits we'll consider, though, because there's a factorial overhead to handling them. A previous commit[^1] added this skip to `strict_direction=False`, but didn't correctly handle the continuation case where we're within the limit. This commit correctly clears out the uncoupled-qubit metadata that was causing problems in later layout reconstruction. [^1]: b4094ddc: Fix calls to `VF2PostLayout` after optimization loop at O3 (cherry picked from commit 2d73e5d93) Co-authored-by: Jake Lishman <jake.lishman@ibm.com>
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