Fix the try build when pushing to branches (#30903)

Make it so that all try builds go through try.yml and pass
workflow_call arguments as expected to subsequent workflows.

Co-authored-by: Samson <16504129+sagudev@users.noreply.github.com>

.github/workflows/windows.yml

@@ -32,8 +32,6 @@ on:
         required: false
         default: false
         type: boolean
-  push:
-    branches: ["try-windows"]
 
 env:
   RUST_BACKTRACE: 1
@@ -89,7 +87,7 @@ jobs:
       - name: Smoketest
         run: python mach smoketest --angle --${{ inputs.profile }}
       - name: Unit tests
-        if: ${{ inputs.unit-tests || github.ref_name == 'try-windows' }}
+        if: ${{ inputs.unit-tests }}
         uses: nick-fields/retry@v2
         with:
           timeout_minutes: 30