fix(native): revert stderr redirect that broke SDL crash recovery
The stderr redirect around sdl_init() was interfering with SDL's
signal-based crash recovery on the ThinkPad. Three consecutive boots
at 17:46-17:48 died before logfile could be opened. Removing the
redirect restores the previous working behavior.
The harmless "MESA-LOADER: failed to open dri" stderr warning stays,
but that's cosmetic and doesn't affect functionality.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>