UPSTREAM: <carry>: enhance QE cases

[Xia-Zhao-rh]

This PR enhances QE test cases for OLM v1 ClusterCatalog and ClusterExtension by improving test isolation, reliability, and assertion logic.

Key improvements:

1. Enhanced test isolation: Added label-based resource selection for multiple test cases (73289, 74948, 74978, 75218, 70723) using case IDs as label values, preventing resource conflicts between concurrent test runs
2. Improved test assertions:
   - Fixed upgrade verification logic in test 75122 using polling mechanism instead of direct condition checks
   - Updated conflict detection assertions in tests 74923 and 80117 to properly validate error messages
   - Enhanced wait conditions to be more flexible and accurate (checking for "already exists" OR "Conflicting" instead of exact strings)
   - Added better error logging and status output for debugging failures
3. Better error handling: Added conditional error output in test 82136 to provide more context when failures occur

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Xia-Zhao-rh
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[openshift-ci]

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