fix(live-chat): keep Top Zappers chips the same height when anonymous

The "Anonymous" chip rendered without a 24dp UserPicture, so its pill
shrank to the text's height and broke horizontal alignment with the
avatar chips in the row. Give the chip row a minimum height equal to
the avatar size so text-only variants stay visually aligned.

https://claude.ai/code/session_01WJA5PvDABegBYUu6h42YZi

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/publicChannels/nip53LiveActivities/header/LiveStreamTopZappers.kt

@@ -27,6 +27,7 @@ import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.heightIn
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.lazy.LazyRow
 import androidx.compose.foundation.lazy.items
@@ -137,7 +138,12 @@ private fun ZapperPill(
         modifier = clickModifier,
     ) {
         Row(
-            modifier = Modifier.padding(horizontal = 6.dp, vertical = 2.dp),
+            // Min height matches the avatar so text-only chips (Anonymous) stay aligned
+            // with the avatar chips in the horizontal row.
+            modifier =
+                Modifier
+                    .heightIn(min = Size24dp)
+                    .padding(horizontal = 6.dp, vertical = 2.dp),
             verticalAlignment = Alignment.CenterVertically,
             horizontalArrangement = Arrangement.spacedBy(4.dp),
         ) {