Copy BuildConfiguration.xml to another location on macOS.

Because it doesn't seem to be picked up from the original spot anymore
in UE 5.5.

.github/workflows/buildApple.yml

@@ -129,6 +129,8 @@ jobs:
           # - We limit parallel actions because our builds use a lot more memory than UBT thinks they will.
           # - We set the source code control Provider to None so UBT includes all files in the unity build.
           printf '<?xml version="1.0" encoding="utf-8" ?>\n<Configuration xmlns="https://www.unrealengine.com/BuildConfiguration">\n    <BuildConfiguration>\n      <MaxParallelActions>2</MaxParallelActions>\n    </BuildConfiguration>\n    <SourceFileWorkingSet><Provider>None</Provider></SourceFileWorkingSet>\n</Configuration>\n' > ~/.config/Unreal\ Engine/UnrealBuildTool/BuildConfiguration.xml
+          mkdir -p ~/.config/Unreal\ Engine/UnrealBuildTool
+          cp ~/.config/Unreal\ Engine/UnrealBuildTool/BuildConfiguration.xml ~/Unreal\ Engine/UnrealBuildTool/BuildConfiguration.xml
       - name: Build plugin for macOS and iOS
         run: |
           sed -i '' 's/\"EngineVersion\": \"5.2.0\"/\"EngineVersion\": \"${{ inputs.unreal-engine-version }}\"/g' CesiumForUnreal.uplugin