waitForMgmt errors are not caught

[mantis-toboggan-md]

Setup

• Rancher version: v2.13.4
• Rancher UI Extensions: n/a
• Browser type & version: ff

Describe the bug
When waitForMgmt throws errors (eg when the management cluster being searched for does not exist) the errors are not caught and the whole page breaks.

To Reproduce
This came out of testing the error handling in the virtual clusters extension. Modify the waitForMgmt function to cause the find dispatch to always fail, eg change clusterName to a garbage string. Next, try to create a generic rke2 cluster: this will trigger a call to waitForMgmt

Result
The error thrown by waitForMgmt is not caught.

Expected Result
The error should be caught. It looks like the code originally intended to silently catch errors here, but that is not working.

Screenshots

Additional context

[github-actions]

🤖 Issue grooming analysis

This issue is well-groomed and ready for triage. Here's the analysis against the checklist:

✅ Clear Problem Statement
The title and description clearly explain the bug: errors thrown by waitForMgmt (when the management cluster is not found) are not caught, causing the entire page to break. The context (cluster creation flow, virtual clusters extension) is provided.

✅ Acceptance Criteria
The expected result is clearly stated: the error should be caught. The original code apparently intended to handle this silently. "Done" means errors from waitForMgmt are caught and handled gracefully so that the page does not break.

✅ Technical Details
The specific function (waitForMgmt) and the reproduction technique (forcing a dispatch failure by replacing clusterName with a garbage string, then creating a generic RKE2 cluster) are clearly identified. The failure mode is well-described.

✅ Reproducibility
Numbered steps and a clear expected vs. actual outcome are provided. The preconditions (testing via the virtual clusters extension error handling flow) are stated.

This analysis was generated automatically based on the repository's grooming checklist.

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