Ignore all aiohttp.ContentTypeError occurrences

[No767]

Summary

Basically ignore all aiohttp.ContentTypeError occurrences within the tree. This way, we still get a response back for the user saying that we can't parse their query, and it's emitted into stderr for tracking purposes. But we don't send back another response with the usual FullEmbedError contents so this hides the invalid query and doesn't give more information than necessary.

Types of changes

What types of changes does your code introduce to Catherine-Chan
Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (Updates to README.md, the documentation, etc)
• Other (if none of the other choices apply)

Checklist

Put an x in the boxes that apply

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes. (if appropriate)
• All workflows (except pre-commit.ci) pass with my new changes
• This PR does not address a duplicate issue or PR

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud