with user defined tags, sometimes "create cluster" got panic

    4.18.0-rc.9 for example

    Sometimes (Easy to reproduce in PROW CI, at least today)

1. "create install-config", and then insert interested settings (see [1])
2. activate the IAM service account which has the required permissions
3. (optional)"create manifests"
4. "create cluster"

    Sometimes "create manifests" or "create cluster" got panic (see [2]). 

    The installation should either succeed, or tell clear error messages. In any case, there should be no panic. 

    The panic looks being caused by either PROW System flake or GCP flake, because of below reasons: 
(1) We tried manually installation locally, of 4.18.0-0.nightly-multi-2025-02-17-042334 and 4.17.0-0.nightly-multi-2025-02-15-095503, both succeeded. 
(2) As for PROW CI tests, both with 4.18.0-rc.9, the Feb. 14's installation succeeded, but today's installation got the panic issue (see [3]). 

FYI the PROW CI debug PR: https://github.com/openshift/release/pull/61698