Stage release: operator v25.1.5 and charts/redpanda v25.1.4

[david-yu]

Summary

• Cut operator release v25.1.5
• Cut charts/redpanda release v25.1.4
• Updated golden test files for operator chart version bump

Changes

operator v25.1.5

• Changed: Modified statefulset liveness probes to do TCP check on admin port instead of curl request through internal service
• Fixed: Allow Topic finalizer removal when broker is unreachable or credentials are missing during deletion, preventing stuck namespaces

charts/redpanda v25.1.4

• Changed: Modified statefulset liveness probes to do TCP check on admin port instead of curl request through internal service

Test plan

• go test -run TestTemplate ./operator/chart/... passes with updated golden files
• CI passes

🤖 Generated with Claude Code

[david-yu]

Note: The branch name cut-release-operator-v25.3.2-redpanda-v25.1.4 is incorrectly named. This PR is actually for operator v25.1.5 and charts/redpanda v25.1.4.