fix(ci): Use correct context variable in github-script

In actions/github-script@v8, the GitHub context is available as the
global variable 'context', not 'github.context'. The previous fix
incorrectly used github.context which doesn't exist in the github-script
environment, causing "Invalid GitHub context" errors on pull_request_target
events.

Also added defensive return statements after core.setFailed() calls.

Signed-off-by: Chmouel Boudjnah <chmouel@redhat.com>
Assisted-by: Claude-3.5-Sonnet (via Claude Code)

Author: chmouel

.github/workflows/e2e.yaml

@@ -80,16 +80,16 @@ jobs:
         uses: actions/github-script@v8
         with:
           script: |
-            if (!github || !github.context || !github.context.payload || !github.context.payload.pull_request) {
+            if (!context || !context.payload || !context.payload.pull_request) {
               core.setFailed('Invalid GitHub context: missing required pull_request information');
               return;
             }
 
             async function run() {
-              const actor = github.context.payload.pull_request.user.login;
-              const repoOwner = github.context.repo.owner;
-              const repoName = github.context.repo.repo;
-              const targetOrg = github.context.repo.owner;
+              const actor = context.payload.pull_request.user.login;
+              const repoOwner = context.repo.owner;
+              const repoName = context.repo.repo;
+              const targetOrg = context.repo.owner;
 
               core.info(`🔍 Starting permission check for user: @${actor}`);
               core.info(`📋 Repository: ${repoOwner}/${repoName}`);
@@ -221,13 +221,15 @@ jobs:
                   core.setFailed(
                     `❌ Permission check failed. User @${actor} did not meet any required conditions (trusted bot, org member, or repo write access).`,
                   );
+                  return;
                 }
               } catch (error) {
                 // This error means they are not even a collaborator.
                 core.info(`   ❌ Collaborator permission check failed: ${error.message}`);
                 core.setFailed(
                   `❌ Permission check failed. User @${actor} is not a collaborator on this repository and did not meet other conditions.`,
                 );
+                return;
               }
             }