Fix possible null access in formatNumber

Author: daohoangson

lib/src/intl.dart

@@ -413,7 +413,7 @@ class L10nDelegate extends LocalizationsDelegate<L10n> {
 DateTime secondsToDateTime(int secondsSinceEpoch) =>
     DateTime.fromMillisecondsSinceEpoch(secondsSinceEpoch * 1000);
 
-String formatNumber(dynamic value) => _numberFormatCompact.format(value);
+String formatNumber(num value) => _numberFormatCompact.format(value);
 
 String formatTimestamp(BuildContext context, int? timestamp) {
   if (timestamp == null) return '';

lib/src/widgets/thread/widget.dart

@@ -313,7 +313,7 @@ class _ThreadWidgetActionsState extends State<_ThreadWidgetActions> {
         ),
       ),
       TextSpan(
-        text: " ${formatNumber(post.postLikeCount)}",
+        text: " ${formatNumber(postLikeCount)}",
         style: textStyle,
       ),
     ];

lib/src/widgets/user/member_view_header.dart

@@ -81,7 +81,7 @@ class MemberViewHeader extends StatelessWidget {
             ),
             const SizedBox(width: 5),
             Text(
-              formatNumber(user.userMessageCount),
+              formatNumber(user.userMessageCount ?? 0),
               style: style,
             ),
           ],
@@ -95,7 +95,7 @@ class MemberViewHeader extends StatelessWidget {
             ),
             const SizedBox(width: 5),
             Text(
-              formatNumber(user.userLikeCount),
+              formatNumber(user.userLikeCount ?? 0),
               style: style,
             ),
           ],