Document new env variable in Qiskit 1.2.0 #1836
Merged
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In Qiskit 1.2.0 a new env variable was added to control the threading behavior of the routing and layout passes in the preset pass managers. You can see the details of this new option in the 1.2.0 release notes or in the PR Qiskit/qiskit#12780. This commit adds the documentation for this feature to the local configuration guide.