Fix deep links now working as expected on cold start of the app. (#2453)

Author: timonus

Classes/View Controllers/SplitViewControllerDelegate.swift

@@ -94,7 +94,10 @@ final class SplitViewControllerDelegate: UISplitViewControllerDelegate {
         guard let tab = splitViewController.viewControllers.first as? UITabBarController
             else { return false }
 
-        if splitViewController.isCollapsed {
+        // isCollapsed can be false even when showing a single view controller on iPhone.
+        // We check viewControllers.count as well to ensure we don't skip showing view controllers on the nav stack that we'd like to.
+        // https://github.com/GitHawkApp/GitHawk/issues/2450
+        if splitViewController.isCollapsed || splitViewController.viewControllers.count == 1 {
             if let nav = vc as? UINavigationController, let first = nav.viewControllers.first {
                 tab.selectedViewController?.show(first, sender: sender)
             } else {