Description of problem:
During an operator installation with the Installation mode set to all namespaces, the "Installed Namespace" dropdown selection is restricted to "openshift-operators" or another specific namespace, if one is recommended by the operator owners.
With to recent* change to allow non-latest operator version installs, users should be allowed to select any namespace to install a globally installed operator.
Operators can now be installed on non-latest versions with the merge of * https://github.com/openshift/console/pull/12743 They require a manual approval and because of the way InstallPlan upgrades work, this effects all operators installed that namespace.
Version-Release number of selected component (if applicable):
Steps to Reproduce: