Vastly out of my skillset on this but, I’ve compiled libEGL.dll and libGLESv2.dll for use with the q2pro builds (and probably anything else on your windows system that might use EGL).
The download is available in https://quake2.itbacon.com/public/q2pro (q2pro-libEGL-libGLESv2-v2.1.28252.0-dlls.zip)
Version 2.1.28252.0 from git was used.
32-bit (x86) and 64-bit (x64) DLLs are included, but unlike OpenAL you’ll have to put them in C:\windows\system32 (64-bit) and C:\windows\SYSWOW64 (32-bit). The zip file is made so you can just extract to C:\ and they will go into the correct folders.