[native][web] Add migration to unshim Blob-hosted multimedia

Summary:
Point 3c from [[ https://linear.app/comm/issue/ENG-6459/launch-of-encrypted-media#comment-974e1b67 | ENG-6459 ]].

Depends on D13888

Test Plan:
1. Before applying D13888 and this, I sent some encrypted multimedia messages. They appeared as robotext
2. Applied both diffs and ran migration
3. Multimedia messages appeared normally

Reviewers: ashoat

Reviewed By: ashoat

Subscribers: tomek

Differential Revision: https://phab.comm.dev/D13889

native/redux/persist.js

@@ -1496,6 +1496,7 @@ const migrations: MigrationsManifest<NavInfo, AppState> = Object.freeze({
     state,
     ops: {},
   }): MigrationFunction<NavInfo, AppState>),
+  [85]: (state: AppState) => unshimClientDB(state, [messageTypes.MULTIMEDIA]),
 });
 
 // NOTE: renaming this object, and especially the `version` property
@@ -1506,7 +1507,7 @@ const persistConfig = {
   storage: AsyncStorage,
   blacklist: persistBlacklist,
   debug: __DEV__,
-  version: 84,
+  version: 85,
   transforms: [
     messageStoreMessagesBlocklistTransform,
     reportStoreTransform,

web/redux/persist-constants.js

@@ -3,6 +3,6 @@
 const rootKey = 'root';
 const rootKeyPrefix = 'persist:';
 const completeRootKey = `${rootKeyPrefix}${rootKey}`;
-const storeVersion = 84;
+const storeVersion = 85;
 
 export { rootKey, rootKeyPrefix, completeRootKey, storeVersion };

web/redux/persist.js

@@ -718,6 +718,10 @@ const migrations: MigrationsManifest<WebNavInfo, AppState> = {
     };
     return { state, ops: operations };
   }: MigrationFunction<WebNavInfo, AppState>),
+  [85]: (async (state: AppState) => ({
+    state,
+    ops: {},
+  }): MigrationFunction<WebNavInfo, AppState>),
 };
 
 const persistConfig: PersistConfig = {