Update expected UI screenshots for the restyled selects and drag handle, PG-942

[snake14]

Description

Companion to matomo-org/matomo#25033 (restyled expandable selects and the standard drag handle): updates this plugin's 4 expected UI screenshots to the new component rendering. The screenshots were generated by that PR's CI and synced from its artifacts, then reviewed individually — the diffs are the restyled components only.

This branch is cut from the commit matomo core's 6.x-dev currently pins for this plugin (one commit ahead of the prepare6x merge-base), because that pin is what core CI renders; the core PR advances its gitlink to this branch. Targeted at prepare6x as the 6.x line; the small base divergence is pre-existing pin drift.

Merge-order dependency: this PR's own UI check tests against plain 6.x-dev and fails on exactly the synced screenshots until matomo-org/matomo#25033 merges — the new expectations render only with that PR's restyle. Merge matomo#25033 first, then this.

Issue No

Related to matomo-org/matomo#25033 (PG-942)

Steps to Replicate the Issue

1. Run Restyle expandable select dropdowns and add a standard drag handle component matomo#25033's UI-plugins CI job for this plugin.
2. Expected: screenshots match the restyled expandable selects and drag handle.
3. Actual before this change: 4 screenshot comparisons failed against the pre-restyle expectations.

Checklist

• [✖] Tested locally or on demo2/demo3? (validated via Restyle expandable select dropdowns and add a standard drag handle component matomo#25033's CI and visual review of every synced screenshot)
• [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)
• [NA] 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?