DGS-425 Fix chosen select width on carrier switch in checkout

[TLabutis]

Summary

• Phone area code, city and street selects rendered with 0px width when switching carriers via AJAX in checkout (PS9 default checkout and steasycheckout). Fields displayed correctly only after a full page refresh.
• Root cause: Chosen widgets were initialized while the parent .carrier-extra-content was still hidden, so they calculated the wrong width. PrestaShop 9 hides all carrier extra content blocks and slides down only the selected one.
• Fix: Re-initialize Chosen widgets (destroy + re-init) once the carrier extra content is actually visible. Uses the slideDown completion callback for default checkout and a short polling loop for OPC modules and theme animations.

Test plan

• PS 9.0.0 / 9.0.3 default checkout: switch between DPD carriers and verify phone area code, city and street selects render with full width
• PS 9 with steasycheckout: switch between DPD carriers and verify the same
• PS 8.x regression: confirm carrier switching still works and selects render correctly
• Verify city change still updates streets and PUDO points (no regression in pudo-search.js flow)