fix: Simplify coverage testing setup and adjust report generation paths

Author: mattana

.github/workflows/coverage.yml

@@ -20,24 +20,19 @@ jobs:
       - name: Restore
         run: dotnet restore
 
-      - name: Prepare coverage folder
-        run: mkdir -p TestResults/coverage
-
       - name: Test with coverage
         run: |
           dotnet test ActorSrcGen.sln \
             --results-directory TestResults \
-            /p:CollectCoverage=true \
-            /p:CoverletOutput=$(pwd)/TestResults/coverage/coverage \
-            /p:CoverletOutputFormat=cobertura \
+            --collect:"XPlat Code Coverage" \
             /p:Threshold=85 \
             /p:ThresholdType=line
 
       - name: Install reportgenerator
         run: dotnet tool install --global dotnet-reportgenerator-globaltool --version 5.1.0
 
       - name: Generate coverage report
-        run: ~/.dotnet/tools/reportgenerator -reports:TestResults/coverage/coverage.cobertura.xml -targetdir:coverage-report -reporttypes:Html
+        run: ~/.dotnet/tools/reportgenerator -reports:TestResults/**/coverage.cobertura.xml -targetdir:coverage-report -reporttypes:Html
 
       - name: Upload coverage report
         uses: actions/upload-artifact@v4