Previously, game list preview videos/GIFs were only triggered by
mouse hover events. This meant that users navigating the game list
via keyboard or gamepad would never see the preview animations.
Connect to currentCellChanged to also activate/deactivate the movie
item when the selected row changes, providing visual feedback for all
input methods.
Fixes#18315
## Summary
Fixes the GUI language dropdown to show territory variants when
translation files include country codes.
**Before:** "Portuguese" for both `pt_BR` and `pt_PT`
**After:** "Portuguese (Brazil)" and "Portuguese (Portugal)"
Also fixes the same ambiguity for Chinese and any other language with
country variants.
## Implementation
Uses `QLocale::territoryToString()` alongside the existing
`QLocale::languageToString()` to construct display labels. When no
territory exists (e.g., `en`, `ja`), the label is unchanged.
## Edge cases
- No-territory locales (`en`, `ja`): unchanged —
`QLocale::territoryToString(AnyTerritory)` returns empty, guard
preserves plain language name
- Territory names are locale-translated (not hardcoded English) — they
follow the current UI language, same as `languageToString()`
- `zh_CN` → "Chinese (China)" / `zh_TW` → "Chinese (Taiwan)"
(territory-based, unlike the PS3 system language dropdown which uses
Simplified/Traditional script names — this is appropriate for the GUI
translator selector context)
## Test Plan
- [ ] Language menu shows "Portuguese (Brazil)" when `rpcs3_pt_BR.qm` is
present
- [ ] Language menu shows "Chinese (China)" when `rpcs3_zh_CN.qm` is
present
- [ ] Plain languages (`en`, `ja`) continue to show without parens
---
<details>
<summary>Review note: territory strings in UI locale</summary>
Territory names render in the current UI language (not forced English).
This matches `QLocale::languageToString()` behavior and is consistent
with how the rest of the menu renders. If hardcoded English labels are
preferred, that can be added after review.
</details>
Fixes#18215
