make the isLoading prop mandatory and add docs

Author: eshankvaish

src/components/app/details/appDetails/appDetails.type.ts

@@ -111,7 +111,10 @@ export interface DeploymentStatusDetailModalType {
     deploymentStatusDetailsBreakdownData: DeploymentStatusDetailsBreakdownDataType
     streamData: AppStreamData
     isVirtualEnvironment: boolean
-    isLoading?: boolean
+    /**
+     * Loading state for the timeline data
+     */
+    isLoading: boolean
 }
 
 export interface ModuleConfigResponse extends ResponseType {