Only add screenshot warning if capture was greater than trim size (#3123)

changedetectionio/content_fetchers/screenshot_handler.py

@@ -31,7 +31,7 @@ def stitch_images_worker(pipe_conn, chunks_bytes, original_page_height, capture_
         # Draw caption on top (overlaid, not extending canvas)
         draw = ImageDraw.Draw(stitched)
 
-
+        if original_page_height > capture_height:
             caption_text = f"WARNING: Screenshot was {original_page_height}px but trimmed to {capture_height}px because it was too long"
             padding = 10
             font_size = 35