fix: sanitizer svg to avoid xss

[iamjoel]

Checklist

Important

Please review the checklist below before submitting your pull request.

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods

[Ufktarimarge]

https://app.snyk.io/org/ufukkilinc167/project/53ca190f-6027-4c12-b73f-426b61ed7fb4#issue-83612a84-7931-498c-b289-0cce796e2e0d