Use userAgent instead of depricated appVersion to check for safari indexDB bug. (#6899)

Author: KoryNunn

.changeset/chilled-buckets-sneeze.md

@@ -0,0 +1,6 @@
+---
+'@firebase/firestore': patch
+'firebase': patch
+---
+
+Check navigator.userAgent, in addition to navigator.appVersion, when determining whether to work around an IndexedDb bug in Safari.

packages/firestore/src/local/indexeddb_persistence.ts

@@ -977,8 +977,13 @@ export class IndexedDbPersistence implements Persistence {
         // to make sure it gets a chance to run.
         this.markClientZombied();
 
-        if (isSafari() && navigator.appVersion.match(/Version\/1[45]/)) {
-          // On Safari 14 and 15, we do not run any cleanup actions as it might
+        const safariIndexdbBugVersionRegex = /(?:Version|Mobile)\/1[456]/;
+        if (
+          isSafari() &&
+          (navigator.appVersion.match(safariIndexdbBugVersionRegex) ||
+            navigator.userAgent.match(safariIndexdbBugVersionRegex))
+        ) {
+          // On Safari 14, 15, and 16, we do not run any cleanup actions as it might
           // trigger a bug that prevents Safari from re-opening IndexedDB during
           // the next page load.
           // See https://bugs.webkit.org/show_bug.cgi?id=226547