Add escapeshell args for matomo domain, #AS-685

[AltamashShaikh]

Description

Add escapeshell args for matomo domain, #AS-685

Issue No

Steps to Replicate the Issue

Checklist

• [✔] Tested locally or on demo2/demo3?
• [NA] New test case added/updated?
• [NA] Are all newly added texts included via translation?
• [NA] Are text sanitized properly? (Eg use of v-text v/s v-html for vue)
• [✖] Version bumped?
• [✔] I have understood, reviewed, and tested all AI outputs before use
• [✔] All AI instructions respect security, IP, and privacy rules
• [NA] Documentation updated?

[snake14]

Looks good. Do we need to bump the version and release?

AI listed an item, but I don't know if I'd really consider it blocking:

Blocking

1. No regression test covers the shell-injection fix in Importer.php:291 and ImporterGA4.php:343. Existing importer tests leave custom-variable slots at zero, so importCustomVariableSlots() returns before reaching passthru(). A future regression could therefore reintroduce command injection while CI remains green. This violates the matomo-test-runner regression-coverage requirement.