feat(ci): Use workflow_dispatch option for nightly builds in order to trigger them on demand when needed (#2593)

.github/workflows/nightly-browser-view.yml

@@ -1,6 +1,7 @@
 name: nightly-browser-view
 
 on:
+  workflow_dispatch:
   schedule:
     - cron: 0 4 * * 0-5
 

.github/workflows/nightly-rainforest.yml

@@ -1,6 +1,7 @@
 name: nightly-rainforest
 
 on:
+  workflow_dispatch:
   schedule:
     - cron: 0 4 * * 0-5