fix(app, android): require default firebase.json boolean key (#4791)

This fixes the case where firebase.json existed but the key being
query was missing. Previously the config system would silently fail on
the missing key and return false even though the default for some keys
should be true

In particular this caused analytics auto collection to be disabled
if you had a firebase.json but no analytics_auto_collection_enabled = true entry,
even though the default should have been true

Credit to @WadhahEssam for discovery, diagnosis, and general solution

packages/admob/android/build.gradle

@@ -74,7 +74,7 @@ def firebaseJSONAdmobDelayAppMeasurementInitBool = false
 
 if (rootProject.ext.firebaseJson) {
   firebaseJSONAdmobAppIDString = rootProject.ext.firebaseJson.getStringValue("admob_android_app_id", "")
-  firebaseJSONAdmobDelayAppMeasurementInitBool = rootProject.ext.firebaseJson.isFlagEnabled("admob_delay_app_measurement_init")
+  firebaseJSONAdmobDelayAppMeasurementInitBool = rootProject.ext.firebaseJson.isFlagEnabled("admob_delay_app_measurement_init", false)
 }
 
 if (!firebaseJSONAdmobAppIDString) {

packages/analytics/android/build.gradle

@@ -68,7 +68,7 @@ apply from: file("./../../app/android/firebase-json.gradle")
 def autoCollectionEnabled = "true"
 
 if (rootProject.ext && rootProject.ext.firebaseJson) {
-  if (rootProject.ext.firebaseJson.isFlagEnabled("analytics_auto_collection_enabled") == false) {
+  if (rootProject.ext.firebaseJson.isFlagEnabled("analytics_auto_collection_enabled", true) == false) {
     autoCollectionEnabled = "false"
   }
 }

packages/app/android/firebase-json.gradle

@@ -32,8 +32,9 @@ if (jsonFile != null && jsonFile.exists()) {
 
     rootProject.ext.firebaseJson = [
       raw: json[jsonRoot],
-      isFlagEnabled: { key ->
-        return json[jsonRoot] != null && json[jsonRoot][key] == true
+      isFlagEnabled: { key, defaultValue ->
+        if (json[jsonRoot] == null || json[jsonRoot][key] == null) return defaultValue
+        return json[jsonRoot][key] == true ? true : false
       },
       getStringValue: { key, defaultValue ->
         if (json[jsonRoot] == null) return defaultValue

packages/messaging/android/build.gradle

@@ -72,7 +72,7 @@ def notificationColor = defaultNotificationColor
 
 
 if (rootProject.ext && rootProject.ext.firebaseJson) {
-  if (rootProject.ext.firebaseJson.isFlagEnabled("messaging_auto_init_enabled") == false) {
+  if (rootProject.ext.firebaseJson.isFlagEnabled("messaging_auto_init_enabled", true) == false) {
     autoInitEnabled = "false"
   }
   notificationChannelId = rootProject.ext.firebaseJson.getStringValue("messaging_android_notification_channel_id", "")