Mainly fixes problem sending a test notification

What's Changed

*UI - Fixing up 'test notification' bug from main settings and tag settings pages #2510 (#2511) by @dgtlmoon in https://github.com/dgtlmoon/changedetection.io/pull/2511

Full Changelog: https://github.com/dgtlmoon/changedetection.io/compare/0.46.00...0.46.01