Fix proxyUrl with urldecode in sanitize and validate callbacks before…

[mediaformat]

Fixes proxyUrl endpoint to accept urlencoded id

Fixes #2851

Proposed changes:

• urldecode() in sanitize_url callback & validate_url callback

Other information:

• Have you written new tests for your changes, if applicable?

Testing instructions:

• Go to '..'

Changelog entry

• Automatically create a changelog entry from the details below.

Changelog Entry Details

Significance

• Patch
• Minor
• Major

Type

• Added - for new features
• Changed - for changes in existing functionality
• Deprecated - for soon-to-be removed features
• Removed - for now removed features
• Fixed - for any bug fixes
• Security - in case of vulnerabilities

Message

[pfefferle]

Nice, thanks 😊