fix: cancelled links previews, context menu width

apps/android/app/src/main/java/chat/simplex/app/views/chat/SendMsgView.kt

@@ -140,6 +140,7 @@ fun SendMsgView(
                   sendMessage(msg.value)
                   msg.value = ""
                   textStyle = smallFont
+                  cancelledLinks.clear()
                 }
               }
           )

apps/android/app/src/main/java/chat/simplex/app/views/chat/item/ChatItemView.kt

@@ -57,7 +57,7 @@ fun ChatItemView(
         DropdownMenu(
           expanded = showMenu.value,
           onDismissRequest = { showMenu.value = false },
-          Modifier.width(150.dp)
+          Modifier.width(180.dp)
         ) {
           ItemAction(generalGetString(R.string.reply_verb), Icons.Outlined.Reply, onClick = {
             editingItem.value = null