Check DC flag for headers (#32)

Author: aashishpatil-g

Sources/Internal/GrpcClient.swift

@@ -266,9 +266,11 @@ actor GrpcClient: CustomStringConvertible {
   func createCallOptions() async -> CallOptions {
     var headers = HPACKHeaders()
 
-    headers.add(name: RequestHeaders.googRequestParamsHeader, value: googRequestHeaderValue)
-    headers.add(name: RequestHeaders.firebaseAppId, value: app.options.googleAppID)
-    headers.add(name: RequestHeaders.googApiClient, value: googApiClientHeaderValue)
+    if app.isDataCollectionDefaultEnabled {
+      headers.add(name: RequestHeaders.googRequestParamsHeader, value: googRequestHeaderValue)
+      headers.add(name: RequestHeaders.firebaseAppId, value: app.options.googleAppID)
+      headers.add(name: RequestHeaders.googApiClient, value: googApiClientHeaderValue)
+    }
 
     // Add Auth token if available
     do {