The restored EGL+GLX compatibility patch allows the default GLEW build to
support both EGL and GLX again.
Remove package specific overrides that forced `enableEGL = false`.
meshlab renders through Qt's xcb platform, which creates a GLX context
and calls glewInit() against it. Since the glew 2.2.0 -> 2.3.1 upgrade
(#526521) dropped Arch's egl+glx coexistence patch, the default
EGL-enabled glew is built EGL-only (no GLX dispatch table), so
glewInit can't read GL_VERSION and meshlab fails to launch with
"GLEW initialization failed: Missing GL version".
Use a GLX-capable glew (enableEGL = false), matching the workaround
already used by openscad and rpcs3.
Resolves#531470
Co-authored-by: daef <daef@sourcemonk.com>
Assisted-by: Claude-Code:GLM-5.2
