fix(@angular/cli): only set DebugView when NG_DEBUG is passed

`querystring.stringify` will not remove undefined values.

(cherry picked from commit 7bcb19c)

Author: alan-agius4

packages/angular/cli/src/analytics/analytics-collector.ts

@@ -46,11 +46,12 @@ export class AnalyticsCollector {
       [RequestParameter.UserAgentArchitecture]: os.arch(),
       [RequestParameter.UserAgentPlatform]: os.platform(),
       [RequestParameter.UserAgentPlatformVersion]: os.version(),
-
-      // Set undefined to disable debug view.
-      [RequestParameter.DebugView]: ngDebug ? 1 : undefined,
     };
 
+    if (ngDebug) {
+      requestParameters[RequestParameter.DebugView] = 1;
+    }
+
     this.requestParameterStringified = querystring.stringify(requestParameters);
 
     const parsedVersion = semver.parse(process.version);