msglist: Move star icon 2px away from the edge of the screen

Fixes: #1247

Author: lakshya1goel

lib/widgets/message_list.dart

@@ -1354,32 +1354,37 @@ class MessageWithPossibleSender extends StatelessWidget {
           if (senderRow != null)
             Padding(padding: const EdgeInsets.fromLTRB(16, 2, 16, 0),
               child: senderRow),
-          Row(
-            crossAxisAlignment: CrossAxisAlignment.baseline,
-            textBaseline: localizedTextBaseline(context),
+          Stack(
             children: [
-              const SizedBox(width: 16),
-              Expanded(child: Column(
-                crossAxisAlignment: CrossAxisAlignment.stretch,
-                children: [
-                  MessageContent(message: message, content: item.content),
-                  if ((message.reactions?.total ?? 0) > 0)
-                    ReactionChipsList(messageId: message.id, reactions: message.reactions!),
-                  if (editStateText != null)
-                    Text(editStateText,
-                      textAlign: TextAlign.end,
-                      style: TextStyle(
-                        color: designVariables.labelEdited,
-                        fontSize: 12,
-                        height: (12 / 12),
-                        letterSpacing: proportionalLetterSpacing(
-                          context, 0.05, baseFontSize: 12))),
-                ])),
-              SizedBox(width: 16,
-                child: message.flags.contains(MessageFlag.starred)
-                  ? Icon(ZulipIcons.star_filled, size: 16, color: designVariables.star)
-                  : null),
-            ]),
+              Padding(
+                padding: const EdgeInsets.symmetric(horizontal: 16),
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.stretch,
+                  children: [
+                    MessageContent(message: message, content: item.content),
+                    if ((message.reactions?.total ?? 0) > 0)
+                      ReactionChipsList(messageId: message.id, reactions: message.reactions!),
+                    if (editStateText != null)
+                      Text(editStateText,
+                        textAlign: TextAlign.end,
+                        style: TextStyle(
+                          color: designVariables.labelEdited,
+                          fontSize: 12,
+                          height: (12 / 12),
+                          letterSpacing: proportionalLetterSpacing(
+                            context, 0.05, baseFontSize: 12))),
+                  ])),
+              if (message.flags.contains(MessageFlag.starred))
+                Positioned(
+                  top: 4,
+                  right: 2,
+                  child: Icon(
+                    ZulipIcons.star_filled,
+                    size: 16,
+                    color: designVariables.star,
+                  ),
+              ),
+            ])
         ])));
   }
 }