Try non-background execution

Author: maraf

eng/testing/tests.browser.targets

@@ -87,7 +87,7 @@
     <_AppArgs Condition="'$(IsFunctionalTest)' != 'true' and '$(WasmMainAssemblyFileName)' != ''">--run $(WasmMainAssemblyFileName)</_AppArgs>
     <_AppArgs Condition="'$(IsFunctionalTest)' == 'true'">--run $(AssemblyName).dll</_AppArgs>
 
-    <_XUnitBackgroundExec Condition="'$(_XUnitBackgroundExec)' == '' and '$(MonoWasmBuildVariant)' == 'multithread'">true</_XUnitBackgroundExec>
+    <!-- <_XUnitBackgroundExec Condition="'$(_XUnitBackgroundExec)' == '' and '$(MonoWasmBuildVariant)' == 'multithread'">true</_XUnitBackgroundExec> -->
     <WasmTestAppArgs Condition="'$(_XUnitBackgroundExec)' == 'true'">$(WasmTestAppArgs) -backgroundExec</WasmTestAppArgs>
     <_AppArgs Condition="'$(WasmTestAppArgs)' != ''">$(_AppArgs) $(WasmTestAppArgs)</_AppArgs>