fix: remove auto-trigger of e2e-ocp-helm from PR image comment (#4011)

The /test e2e-ocp-helm command in the PR comment was causing duplicate
test runs - once on commit push and again when the container image was
built.

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: subhashkhileri

.github/workflows/pr-podman-push.yaml

@@ -184,7 +184,7 @@ jobs:
               return `* [\`${fullTag}\`](https://${fullTag})`;
             }).join('\n');
             
-            const body = `The image is available at:\n\n${tagLinks}\n\n/test e2e-ocp-helm\n`;
+            const body = `The image is available at:\n\n${tagLinks}\n`;
             
             console.log(`Creating comment for PR ${prNumber} with body:\n ${body}`);