6894 - Create ValidatedElement component and sanitized Markdown.

[RafaPolit]

fixes #6894

PR checklist:

• [ ] Update READ.me ?
• [ ] Update API documentation ?

QA checklist:

• [ ] Smoke test the functionality described in the issue
• [ ] Test for side effects
• [ ] UI responsiveness
• [ ] Cross browser testing
• [ ] Code review

[sentry-io[bot]]

🔍 Existing Issues For Review

Your pull request is modifying functions with the following pre-existing issues:

📄 File: app/react/Markdown/utils.js

Function	Unhandled Issue
logError	TypeError: t.includes is not a function find(app/... Event Count: 1 Affected Users: 11

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