fix: render notify chip avatar via leadingIcon to avoid circle clip

InputChip clips its avatar slot to a circle, which cut off the following
badge that BaseUserPicture draws slightly outside the picture's circle.
Pass the picture through the leadingIcon slot instead, which is not clipped.

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/note/creators/notify/Notifying.kt

@@ -100,7 +100,10 @@ private fun NotifyUserChip(
                 accountViewModel = accountViewModel,
             )
         },
-        avatar = {
+        // Use the leadingIcon slot instead of avatar: InputChip clips the avatar slot
+        // to a circle, which would cut off the following badge that BaseUserPicture
+        // intentionally draws slightly outside the picture's circle.
+        leadingIcon = {
             BaseUserPicture(user, Size24dp, accountViewModel)
         },
         trailingIcon = {