refs https://linear.app/tryghost/issue/CORE-86/fix-failing-site-instance-when-redirects-file-is-invalid
refs 260a47da83
- Added validation logic to catch redirects files having invalid RegEx expressions when they are introduced into the system (on upload)
- This way the error happening in the refed commit would have not happened as the validator would not have passed it through
- Moved up the "Router" declaration in custom-redirects as it needs to happen before any other bit of logic has a chance to throw
5066e65e03