namepsace changes

Author: v-raghulraja

samples/pause/Pause_testPlan.fx.yaml

@@ -21,8 +21,8 @@ testSettings:
       channel: msedge
   extensionModules:
     enable: true
-    parameters:
-      enableCorePause: true  
+    allowPowerFxNamespaces:
+      - Preview
 
 environmentVariables:
   users:

src/Microsoft.PowerApps.TestEngine/PowerFx/Functions/PauseFunction.cs

@@ -55,8 +55,7 @@ public BlankValue Execute()
 
         private bool IsPreviewEnabledInOriginalConfig(TestSettings testSettings)
         {
-            return testSettings?.ExtensionModules?.Parameters?.ContainsKey("enableCorePause") == true &&
-                   testSettings.ExtensionModules.Parameters["enableCorePause"]?.ToString().ToLower() == "true";
+            return testSettings?.ExtensionModules?.AllowPowerFxNamespaces?.Contains("Preview") == true;
         }
     }
 }