CI: Re-enable VS2019 build

Now that we have a more powerful runner and a more stable Docker
configuration, try re-enabling the Windows build.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6446>
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a891178..2909d30 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -382,7 +382,7 @@
     WINDOWS_IMAGE: "$CI_REGISTRY_IMAGE/windows/x64_build:$WINDOWS_TAG"
     WINDOWS_UPSTREAM_IMAGE: "$CI_REGISTRY/$FDO_UPSTREAM_REPO/windows/x64_build:$WINDOWS_TAG"
 
-.windows_build_vs2019:
+windows_build_vs2019:
   extends:
     - .container
     - .windows-docker-vs2019
@@ -684,7 +684,7 @@
     CC: "ccache clang-9"
     CXX: "ccache clang++-9"
 
-.meson-windows-vs2019:
+meson-windows-vs2019:
   extends:
     - .build-windows
     - .use-windows_build_vs2019