fix: Seenby fontsize

lib/pages/chat/seen_by_row.dart

@@ -43,6 +43,7 @@ class SeenByRow extends StatelessWidget {
                   user.avatarUrl,
                   user.calcDisplayname(),
                   size: 16,
+                  fontSize: 9,
                 ),
               )
               .toList(),
@@ -56,7 +57,7 @@ class SeenByRow extends StatelessWidget {
                 child: Center(
                   child: Text(
                     '+${seenByUsers.length - maxAvatars}',
-                    style: const TextStyle(fontSize: 10),
+                    style: const TextStyle(fontSize: 9),
                   ),
                 ),
               ),

lib/widgets/avatar.dart

@@ -14,6 +14,7 @@ class Avatar extends StatelessWidget {
   final Function onTap;
   static const double defaultSize = 44;
   final Client client;
+  final double fontSize;
 
   const Avatar(
     this.mxContent,
@@ -21,6 +22,7 @@ class Avatar extends StatelessWidget {
     this.size = defaultSize,
     this.onTap,
     this.client,
+    this.fontSize = 18,
     Key key,
   }) : super(key: key);
 
@@ -45,7 +47,7 @@ class Avatar extends StatelessWidget {
         fallbackLetters,
         style: TextStyle(
           color: noPic ? name?.darkColor : null,
-          fontSize: 18,
+          fontSize: fontSize,
         ),
       ),
     );