Enable AMD MI200 and H100 to run on branches for testing (#4238)

.github/workflows/amd-mi200.yml

@@ -3,6 +3,7 @@ name: amd-mi200
 on:
   schedule:
     - cron: "0 0 * * *"
+  workflow_dispatch:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}

.github/workflows/nv-h100.yml

@@ -3,6 +3,7 @@ name: nv-h100
 on:
   schedule:
     - cron: "0 0 * * *"
+  workflow_dispatch:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}