Make App Distribution compatible with swizzling-disabled implementations (#10418)

* Revert "Include subheaders in script output (#10212)"

This reverts commit 11313da.

* make app distro swizzling compatible

* add changelog

* fix build

Author: morganchen12

FirebaseAppDistribution/CHANGELOG.md

@@ -1,3 +1,7 @@
+# Unreleased
+- [added] Added a public `application(_:openURL:options:)` method so users
+  with swizzling disabled can still use App Distribution (#10418).
+
 # 10.1.0
 - [fixed] Fixed inconsistent sign in prompts in single scene apps (#8096).
 

FirebaseAppDistribution/Sources/FIRAppDistribution.m

@@ -336,4 +336,13 @@ - (BOOL)isCodeHashIdentical:(NSString *)codeHash {
 
   return codeHash && [codeHash isEqualToString:[machO codeHash]];
 }
+
+#pragma mark - Swizzling disabled
+
+- (BOOL)application:(UIApplication *)application
+            openURL:(NSURL *)url
+            options:(NSDictionary<NSString *, id> *)options {
+  return [self.uiService application:application openURL:url options:options];
+}
+
 @end

FirebaseAppDistribution/Sources/FIRAppDistributionUIService.m

@@ -179,9 +179,7 @@ - (BOOL)application:(UIApplication *)application
   if (self.registrationFlowCompletion) {
     FIRFADDebugLog(@"Continuing registration flow: %@", [self registrationFlowCompletion]);
     [self resetUIState];
-    if (@available(iOS 9.0, *)) {
-      [self logRegistrationCompletion:nil authType:[SFSafariViewController description]];
-    }
+    [self logRegistrationCompletion:nil authType:[SFSafariViewController description]];
     self.registrationFlowCompletion(nil);
   }
   return NO;

FirebaseAppDistribution/Sources/Public/FirebaseAppDistribution/FIRAppDistribution.h

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 @class FIRAppDistributionRelease;
+@class UIApplication;
 #import <Foundation/Foundation.h>
 
 NS_ASSUME_NONNULL_BEGIN
@@ -55,6 +56,14 @@ NS_SWIFT_NAME(AppDistribution)
  */
 - (void)signOutTester;
 
+/**
+ * Handle an App Distribution URL, for example a link to download a new pre-release version.
+ * Call this method in your app delegate's `openURL` implementation if swizzling is disabled.
+ */
+- (BOOL)application:(UIApplication *)application
+            openURL:(NSURL *)url
+            options:(NSDictionary<NSString *, id> *)options;
+
 /**
  * Accesses the singleton App Distribution instance.
  *