[BUG] Game crashes when hovering over maps with Thai language on Linux (Proton)

**Platform:** Linux (Nobara 43) via Steam/Proton
**Proton versions tested:** Proton Experimental, Proton-GE (latest)
**Language setting:** Thai
**Reproducibility:** 100% — happens every time

**Description:**
The game crashes immediately when hovering the mouse over any map item in the inventory while the game language is set to Thai. The crash does not occur when using English.

**Steps to reproduce:**
1. Set game language to Thai
2. Have any map item in inventory
3. Hover mouse over the map item to show tooltip
4. Game crashes instantly with no error dialog

**Root cause (from Wine debug log):**
The crash originates in Wine's GDI32/Uniscribe when attempting to render Thai text. The Uniscribe engine fails to find glyph clusters for Thai characters and dereferences an invalid pointer, causing a page fault.

Key errors from log:
```
err:uniscribe:UpdateClusters Unable to find target glyph
wine: Unhandled page fault on read access to 00000434D8D79642
=>0 0x006fffff4fc38a in gdi32 (+0x1c38a)
```

Full crash backtrace shows the call originates from PathOfExileSteam's text rendering pipeline calling into gdi32's Uniscribe implementation.

**Workaround:** Switching game language to English prevents the crash.

**Request:** Please consider handling missing glyph cases gracefully, or investigate whether the Thai font/glyph rendering pipeline can be made compatible with Wine's Uniscribe implementation on Linux.