ci: Explicitly disable Java tests on Windows Clang builds

Extend the change from commit 840fa28d3d (ci: Explicitly disable Java
tests on Windows, 2021-12-16) to cover LLVM/Clang builds on Windows too.

.gitlab/ci/configure_windows_clang_common.cmake

@@ -1,2 +1,5 @@
+set(CMake_TEST_Java OFF CACHE BOOL "")
+
 set(configure_no_sccache 1)
+
 include("${CMAKE_CURRENT_LIST_DIR}/configure_external_test.cmake")