Log window malfunction with non-US compiler log

**Issue description:**

> [ 00:00:03.212 ]: [Info] C:\Program Files (x86)\Flax\Flax_1.6\Source\ThirdParty\fmt\format.h(467): error C2039: 'begin': 'std'譈�废譄뢊

**Steps to reproduce:**
Using Korean language pack of Visual studio, Output log is broken and not copied properly. No string is copied more than a line.
This problem continued even after changing UI font into proper font flax file supporting Korean characters - data might be already broken when reading output from compiler log.

**Flax version:**
1.6.6344