fix: remove empty anchor tags from rendered markdown

Fixes #4237

Signed-off-by: Vasu <[email protected]>

Author: Vasuk12

gcp/website/frontend_emulator.py

@@ -90,9 +90,9 @@ def _dict_to_vuln(data: object,
         if not vuln_id:
           return None
 
+        vulnerability = vulnerability_pb2.Vulnerability()
         try:
-          vulnerability = sources.parse_vulnerability_from_dict(
-              data, strict=False)
+          json_format.ParseDict(data, vulnerability, ignore_unknown_fields=True)
         except Exception as error:
           print(f'[emulator] Failed to convert entry in {path}: {error}')
           return None

gcp/website/frontend_handlers.py

@@ -855,6 +855,8 @@ def markdown(text):
     # space rather than %2B
     # See: https://github.com/trentm/python-markdown2/issues/621
     md = _URL_MARKDOWN_REPLACER.sub(r'\1/+/\3', md)
+    # Remove empty anchor tags that cause visual artifacts in rendered markdown.
+    # See: https://github.com/google/osv.dev/issues/<issue-number>
     md = _ANCHOR_TAG_REPLACER.sub('', md)
 
     return md