Use proportionalLetterSpacing.

Signed-off-by: Zixuan James Li <[email protected]>

Author: PIG208

lib/widgets/message_list.dart

@@ -1286,10 +1286,12 @@ class MessageWithPossibleSender extends StatelessWidget {
                     ReactionChipsList(messageId: message.id, reactions: message.reactions!),
                   if (editStateText != null)
                     Text(editStateText, textAlign: TextAlign.end,
-                      style: TextStyle(
-                        color: messageListTheme.editStateLabel,
-                        fontSize: 12,
-                        height: (12 / 12))),
+                        style: TextStyle(
+                          color: messageListTheme.editStateLabel,
+                          fontSize: 12,
+                          height: (12 / 12),
+                          letterSpacing: proportionalLetterSpacing(
+                              context, 0.05, baseFontSize: 12))),
                 ])),
               SizedBox(width: 16,
                 child: message.flags.contains(MessageFlag.starred)