Fix Textarea when providing empty line, and prevent broken settings page #20070

Description:

When addind an empty line in a TextArea in "General settings" page, i.e in ips whitelist:

1.1.1.1

2.2.2.2

The array value is stored as {"0": "1.1.1.1", "2": "2.2.2.2"} because of the array_filter.

Also the validate is called before the transform, which seems to be expected, but makes the error uncached.

The impact is the "General settings" page throw an error and stop rendering, so all plugin settings after the error are not rendered, then the page does not display all plugins settings. This PR also catch this js error in case other plugins have the same error, so that all plugins settings are displayed.

Review

• [ ] Functional review done
• [ ] Potential edge cases thought about (behavior of the code with strange input, with strange internal state or possible interactions with other Matomo subsystems)
• [ ] Usability review done (is anything maybe unclear or think about anything that would cause people to reach out to support)
• [ ] Security review done
• [ ] Wording review done
• [ ] Code review done
• [ ] Tests were added if useful/possible
• [ ] Reviewed for breaking changes
• [ ] Developer changelog updated if needed
• [ ] Documentation added if needed
• [ ] Existing documentation updated if needed

Thanks for the help, fixed it and vue files rebuilt.