fix(doc-analyze): adjust image scaling limit to 9000 pixels

Previously, images were not enlarged if their width or height exceeded 3000 pixels.
This threshold has been increased to 9000 pixels to better handle high-resolutionscans and improve the analysis of documents with larger dimensions.

magic_pdf/model/doc_analyze_by_custom_model.py

@@ -37,8 +37,8 @@ def load_images_from_pdf(pdf_bytes: bytes, dpi=200) -> list:
             mat = fitz.Matrix(dpi / 72, dpi / 72)
             pm = page.get_pixmap(matrix=mat, alpha=False)
 
-            # if width or height > 3000 pixels, don't enlarge the image
-            if pm.width > 3000 or pm.height > 3000:
+            # If the width or height exceeds 9000 after scaling, do not scale further.
+            if pm.width > 9000 or pm.height > 9000:
                 pm = page.get_pixmap(matrix=fitz.Matrix(1, 1), alpha=False)
 
             img = Image.frombytes("RGB", (pm.width, pm.height), pm.samples)