update upload_packages workflow to trigger on branch push events and use main as default tag for testing

Author: swap357

.github/workflows/upload_packages.yml

@@ -7,6 +7,11 @@ on:
         description: 'Git tag to download artifacts from (e.g., v0.45.0)'
         required: true
         type: string
+  push:
+    branches:
+      - gha/upload_packages_workflow
+    paths:
+      - '.github/workflows/upload_packages.yml'
 
 jobs:
   find-workflow-runs:
@@ -29,9 +34,11 @@ jobs:
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
+          # Use input tag or default to 'main' for push trigger testing
+          TAG="${{ inputs.tag || 'main' }}"
           # output results to stdout in shell variable format
           output=$(./buildscripts/github/find_workflow_runs.py \
-            --tag "${{ inputs.tag }}" \
+            --tag "$TAG" \
             --repo ${{ github.repository }} \
             --token "${{ secrets.GITHUB_TOKEN }}")
           echo "$output" >> $GITHUB_OUTPUT