feat: Add avatar deletion functionality and update ProfileScreen to handle avatar presence

app/src/main/java/com/rosetta/messenger/ui/chats/components/ChatDetailComponents.kt

@@ -1137,8 +1137,12 @@ fun ProfilePhotoMenu(
     expanded: Boolean,
     onDismiss: () -> Unit,
     isDarkTheme: Boolean,
-    onSetPhotoClick: () -> Unit
+    onSetPhotoClick: () -> Unit,
+    onDeletePhotoClick: (() -> Unit)? = null,
+    hasAvatar: Boolean = false
 ) {
+    val dividerColor = if (isDarkTheme) Color.White.copy(alpha = 0.1f) else Color.Black.copy(alpha = 0.08f)
+    
     DropdownMenu(
         expanded = expanded,
         onDismissRequest = onDismiss,
@@ -1156,6 +1160,25 @@ fun ProfilePhotoMenu(
             tintColor = if (isDarkTheme) Color.White else Color.Black,
             textColor = if (isDarkTheme) Color.White else Color.Black
         )
+        
+        // Показываем Delete только если есть аватар
+        if (hasAvatar && onDeletePhotoClick != null) {
+            Box(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 16.dp, vertical = 4.dp)
+                    .height(0.5.dp)
+                    .background(dividerColor)
+            )
+            
+            ProfilePhotoMenuItem(
+                icon = TablerIcons.Trash,
+                text = "Delete Photo",
+                onClick = onDeletePhotoClick,
+                tintColor = Color(0xFFFF3B30),
+                textColor = Color(0xFFFF3B30)
+            )
+        }
     }
 }