fix: room account data key/type returned encoded

We uri encode all hive keys. But in some cases we never decode them.
This leads to fun issues like SSSS being unreadable after restart.

fixes https://gitlab.com/famedly/company/frontend/famedlysdk/-/issues/179

lib/src/database/hive_database.dart

@@ -282,8 +282,8 @@ class FamedlySdkHiveDatabase extends DatabaseApi {
     final accountData = <String, BasicEvent>{};
     for (final key in _accountDataBox.keys) {
       final raw = await _accountDataBox.get(key);
-      accountData[key] = BasicEvent(
-        type: key,
+      accountData[key.toString().fromHiveKey] = BasicEvent(
+        type: key.toString().fromHiveKey,
         content: convertToJson(raw),
       );
     }
@@ -1159,7 +1159,7 @@ class MultiKey {
   const MultiKey.byParts(this.parts);
 
   MultiKey.fromString(String multiKeyString)
-      : parts = multiKeyString.split('|');
+      : parts = multiKeyString.split('|').map((s) => s.fromHiveKey).toList();
 
   @override
   String toString() => parts.map((s) => s.toHiveKey).join('|');
@@ -1173,3 +1173,7 @@ extension HiveKeyExtension on String {
       ? '$sigil${Uri.encodeComponent(localpart)}:${Uri.encodeComponent(domain)}'
       : Uri.encodeComponent(this);
 }
+
+extension FromHiveKeyExtension on String {
+  String get fromHiveKey => Uri.decodeComponent(this);
+}

test/database_api_test.dart

@@ -155,6 +155,10 @@ void testDatabase(Future<DatabaseApi> futureDatabase, int clientId) {
     await database.storeAccountData(clientId, 'm.test', '{"foo":"bar"}');
     final events = await database.getAccountData(clientId);
     expect(events.values.single.type, 'm.test');
+
+    await database.storeAccountData(clientId, 'm.abc+de', '{"foo":"bar"}');
+    final events2 = await database.getAccountData(clientId);
+    expect(events2.values.any((element) => element.type == 'm.abc+de'), true);
   });
   test('storeEventUpdate', () async {
     await database.storeEventUpdate(