Allow feature/** branches to trigger PR build/test (#2040)

Author: jefchien

.github/workflows/PR-build.yml

@@ -8,6 +8,7 @@ on:
     branches:
       - main*
       - feature*
+      - feature/**
     types:
       - opened
       - synchronize

.github/workflows/PR-test.yml

@@ -21,6 +21,7 @@ on:
     branches:
       - main*
       - feature*
+      - feature/**
     types:
       - opened
       - synchronize