🐛 Bug fixes of infinite reloading

lib/screens/chat/chat.dart

@@ -4,7 +4,6 @@ import 'package:flutter/material.dart';
 import 'package:flutter_animate/flutter_animate.dart';
 import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';
 import 'package:provider/provider.dart';
-import 'package:solian/models/channel.dart';
 import 'package:solian/models/message.dart';
 import 'package:solian/models/pagination.dart';
 import 'package:solian/providers/auth.dart';
@@ -144,6 +143,11 @@ class _ChatScreenWidgetState extends State<ChatScreenWidget> {
     _pagingController.addPageRequestListener((pageKey) => fetchMessages(pageKey, context));
 
     super.initState();
+
+    Future.delayed(Duration.zero, () {
+      _chat.fetchOngoingCall(widget.alias);
+      _chat.fetchChannel(widget.alias);
+    });
   }
 
   @override
@@ -199,21 +203,12 @@ class _ChatScreenWidgetState extends State<ChatScreenWidget> {
       ],
     );
 
-    return FutureBuilder(
-      future: (() async {
-        final res = await Future.wait([
-          _chat.fetchOngoingCall(widget.alias),
-          _chat.fetchChannel(widget.alias),
-        ]);
-        return res[1] as Channel;
-      })(),
-      builder: (context, snapshot) {
-        if (!snapshot.hasData || snapshot.data == null) {
+    if (_chat.focusChannel == null) {
       return const Center(child: CircularProgressIndicator());
     }
 
     return ChatMaintainer(
-          channel: snapshot.data!,
+      channel: _chat.focusChannel!,
       child: Stack(
         children: [
           Column(
@@ -250,7 +245,12 @@ class _ChatScreenWidgetState extends State<ChatScreenWidget> {
       onCallStarted: (call) => _chat.setOngoingCall(call),
       onCallEnded: () => _chat.setOngoingCall(null),
     );
-      },
-    );
+  }
+
+  @override
+  void deactivate() {
+    _chat.focusChannel = null;
+    _chat.ongoingCall = null;
+    super.deactivate();
   }
 }