chore: Revert check message size before fake sync

This lead to the huge problem that there is no
user feedback between sending a message and
seeing it in the timeline as it is encrypted
before the first user feedback is shown. But
the encryption step is async and also includes
fetching devices if necessary so that can take
seconds or even forever on bad internet
connection.

This reverts commit 981c3ea94d.

lib/src/room.dart

@@ -942,11 +942,24 @@ class Room {
 
   Future<String?> _sendContent(
     String type,
-    Map<String, dynamic> sendMessageContent, {
+    Map<String, dynamic> content, {
     String? txid,
   }) async {
     txid ??= client.generateUniqueTransactionId();
 
+    final mustEncrypt = encrypted && client.encryptionEnabled;
+
+    final sendMessageContent = mustEncrypt
+        ? await client.encryption!
+            .encryptGroupMessagePayload(id, content, type: type)
+        : content;
+
+    final utf8EncodedJsonLength =
+        utf8.encode(jsonEncode(sendMessageContent)).length;
+
+    if (utf8EncodedJsonLength > maxPDUSize) {
+      throw EventTooLarge(utf8EncodedJsonLength);
+    }
     return await client.sendMessage(
       id,
       sendMessageContent.containsKey('ciphertext')
@@ -1059,21 +1072,6 @@ class Room {
       }
     }
     final sentDate = DateTime.now();
-
-    final mustEncrypt = encrypted && client.encryptionEnabled;
-
-    final sendMessageContent = mustEncrypt
-        ? await client.encryption!
-            .encryptGroupMessagePayload(id, content, type: type)
-        : content;
-
-    final utf8EncodedJsonLength =
-        utf8.encode(jsonEncode(sendMessageContent)).length;
-
-    if (utf8EncodedJsonLength > maxPDUSize) {
-      throw EventTooLarge(utf8EncodedJsonLength);
-    }
-
     final syncUpdate = SyncUpdate(
       nextBatch: '',
       rooms: RoomsUpdate(
@@ -1113,11 +1111,13 @@ class Room {
       try {
         res = await _sendContent(
           type,
-          sendMessageContent,
+          content,
           txid: messageID,
         );
       } catch (e, s) {
-        if (e is MatrixException &&
+        if (e is EventTooLarge) {
+          rethrow;
+        } else if (e is MatrixException &&
             e.retryAfterMs != null &&
             !DateTime.now()
                 .add(Duration(milliseconds: e.retryAfterMs!))

lib/src/voip/call_session.dart

@@ -1459,7 +1459,7 @@ class CallSession {
       if (capabilities != null) 'capabilities': capabilities.toJson(),
       if (metadata != null) sdpStreamMetadataKey: metadata.toJson(),
     };
-    return await _sendCallContent(
+    return await _sendContent(
       room,
       isGroupCall ? EventTypes.GroupCallMemberInvite : EventTypes.CallInvite,
       content,
@@ -1487,7 +1487,7 @@ class CallSession {
       'selected_party_id': selected_party_id,
     };
 
-    return await _sendCallContent(
+    return await _sendContent(
       room,
       isGroupCall
           ? EventTypes.GroupCallMemberSelectAnswer
@@ -1510,7 +1510,7 @@ class CallSession {
       'version': version,
     };
 
-    return await _sendCallContent(
+    return await _sendContent(
       room,
       isGroupCall ? EventTypes.GroupCallMemberReject : EventTypes.CallReject,
       content,
@@ -1540,7 +1540,7 @@ class CallSession {
       if (capabilities != null) 'capabilities': capabilities.toJson(),
       if (metadata != null) sdpStreamMetadataKey: metadata.toJson(),
     };
-    return await _sendCallContent(
+    return await _sendContent(
       room,
       isGroupCall
           ? EventTypes.GroupCallMemberNegotiate
@@ -1585,7 +1585,7 @@ class CallSession {
       'version': version,
       'candidates': candidates,
     };
-    return await _sendCallContent(
+    return await _sendContent(
       room,
       isGroupCall
           ? EventTypes.GroupCallMemberCandidates
@@ -1617,7 +1617,7 @@ class CallSession {
       if (capabilities != null) 'capabilities': capabilities.toJson(),
       if (metadata != null) sdpStreamMetadataKey: metadata.toJson(),
     };
-    return await _sendCallContent(
+    return await _sendContent(
       room,
       isGroupCall ? EventTypes.GroupCallMemberAnswer : EventTypes.CallAnswer,
       content,
@@ -1639,7 +1639,7 @@ class CallSession {
       'version': version,
       if (hangupCause != null) 'reason': hangupCause,
     };
-    return await _sendCallContent(
+    return await _sendContent(
       room,
       isGroupCall ? EventTypes.GroupCallMemberHangup : EventTypes.CallHangup,
       content,
@@ -1671,7 +1671,7 @@ class CallSession {
       'version': version,
       sdpStreamMetadataKey: metadata.toJson(),
     };
-    return await _sendCallContent(
+    return await _sendContent(
       room,
       isGroupCall
           ? EventTypes.GroupCallMemberSDPStreamMetadataChanged
@@ -1697,7 +1697,7 @@ class CallSession {
       'version': version,
       ...callReplaces.toJson(),
     };
-    return await _sendCallContent(
+    return await _sendContent(
       room,
       isGroupCall
           ? EventTypes.GroupCallMemberReplaces
@@ -1723,7 +1723,7 @@ class CallSession {
       'version': version,
       'asserted_identity': assertedIdentity.toJson(),
     };
-    return await _sendCallContent(
+    return await _sendContent(
       room,
       isGroupCall
           ? EventTypes.GroupCallMemberAssertedIdentity
@@ -1733,7 +1733,7 @@ class CallSession {
     );
   }
 
-  Future<String?> _sendCallContent(
+  Future<String?> _sendContent(
     Room room,
     String type,
     Map<String, Object> content, {