Enable debug builds for all configurations

.github/workflows/main.yml

@@ -1,6 +1,6 @@
 name: CI
 
-on: [push, pull_request]
+on: [push, pull_request, workflow_dispatch]
 
 # Cancel any previous workflows if the pull request was updated
 concurrency:
@@ -15,8 +15,7 @@ jobs:
       matrix:
         os: [ubuntu-22.04, windows-2022]
         platform: [x64]
-        build-cfg: [DebugOpt, Release]
-        #build-cfg: [Debug, DebugOpt, Release] # our local copy of clang isn't build for debug on linux/macos currently
+        build-cfg: [Debug, DebugOpt, Release]
         include:
           - os: windows-2022
             platform: x64