Update status codes for no file provided and attachment too large to 404 and 413 respectively

Author: leekahung

backend/tenantfirstaid/feedback.py

@@ -21,15 +21,15 @@ def send_feedback() -> Tuple[str, int]:
     file = request.files.get("transcript")
 
     if not file:
-        return "No file provided", 400
+        return "No file provided", 404
 
     html_content: str = file.read().decode("utf-8")
     pdf_content: Optional[bytes] = convert_html_to_pdf(html_content)
     if pdf_content is None:
         return "PDF conversion failed", 500
 
     if len(pdf_content) > MAX_ATTACHMENT_SIZE:
-        return "Attachment too large", 400
+        return "Attachment too large", 413
 
     try:
         msg = EmailMessage(