fix helm registry login authentication method

Use license ID for both username and password instead of customer email
for username, matching the authentication pattern used in other projects.
Also properly derive customer email from branch name instead of hardcoding.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: adamancini

.github/workflows/wg-easy-pr-validation.yaml

@@ -208,9 +208,11 @@ jobs:
       - name: Create customer
         id: customer
         run: |
-          task customer-create CUSTOMER_NAME="${{ needs.setup.outputs.branch-name }}" RELEASE_CHANNEL="${{ needs.setup.outputs.channel-name }}"
-          # Extract customer email from the task - using default from customer-create task
-          CUSTOMER_EMAIL="[email protected]"
+          # Create customer and derive email from branch name
+          CUSTOMER_NAME="${{ needs.setup.outputs.branch-name }}"
+          task customer-create CUSTOMER_NAME="$CUSTOMER_NAME" RELEASE_CHANNEL="${{ needs.setup.outputs.channel-name }}"
+          # Derive customer email from customer name (branch name)
+          CUSTOMER_EMAIL="${CUSTOMER_NAME}@example.com"
           echo "customer-email=$CUSTOMER_EMAIL" >> $GITHUB_OUTPUT
           echo "Customer email: $CUSTOMER_EMAIL"
         timeout-minutes: 5
@@ -254,7 +256,7 @@ jobs:
 
       - name: Helm registry login
         run: |
-          helm registry login registry.replicated.com --username "${{ needs.create-customer-and-cluster.outputs.customer-email }}" --password "${{ needs.create-customer-and-cluster.outputs.license-id }}"
+          helm registry login registry.replicated.com --username "${{ needs.create-customer-and-cluster.outputs.license-id }}" --password "${{ needs.create-customer-and-cluster.outputs.license-id }}"
         timeout-minutes: 5
 
       - name: Helm install