Update gitstream.cm

Testing label from branch simple expression

Author: conorbronsdon

.cm/gitstream.cm

@@ -42,13 +42,14 @@ automations:
           label: "🗑️ Deleted files"
           color: "{{ colors.orange }}"
 
-  label_from_branch:
+  # Option 1: Using a simpler expression
+  label_from_branch_1:
     if:
       - true
     run:
       - action: add-label@v1
         args:
-          label: "{{ branch | split('/') | first }}"
+          label: "{{ branch }}"
 calc:
   etr: "{{ branch | estimatedReviewTime }}"