Run render tests on Win32 CI

The SKIP_RENDER_TESTS flag was originally added because WARP could not handle the _external path in bgfx. bgfx PR BabylonJS#1669 fixed CreateShaderResourceView for the _external parameter, so the render test should pass on WARP now. Let CI verify.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: bghgary

.github/workflows/build-win32.yml

@@ -63,7 +63,6 @@ jobs:
             -D GRAPHICS_API=${{ inputs.graphics-api }} ^
             -D BGFX_CONFIG_MAX_FRAME_BUFFERS=256 ^
             -D BABYLON_DEBUG_TRACE=ON ^
-            -D BABYLON_NATIVE_SKIP_RENDER_TESTS=ON ^
             -D ENABLE_SANITIZERS=${{ steps.vars.outputs.sanitizer_flag }}
 
       - name: Build