NMS-20129: PrimeVue Manage Monitoring Locations page

[joseanesONMS]

Migrates the Manage Monitoring Locations admin page to a PrimeVue /ui screen. Reuses the existing /api/v2/monitoringLocations CRUD unchanged — no backend or schema change.

• The menu entry is repointed; MenuHeaderIT is updated to assert the new page.
• Update is read-before-write, preserving geolocation, tags, and other fields the form does not expose.
• The table adds a client-side global search, full-column sort with a default order, empty/error states, and a bounded fetch (2,000) with a "showing first N" note.
• Priority is validated client-side to 1–2,147,483,647 (the DB column is a 32-bit integer) with Save blocked on any invalid value; the location name blocks URL- and FIQL-unsafe characters.
• These field validations are client-side only — the REST API still accepts out-of-range values.
• Delete treats a 404 as success, and the Default location cannot be deleted.
• Component, service, store, and container tests are added.