MDEV-30344 MTR tests fail when built without WSREP

When building with -DWITH_WSREP=OFF, files required for MTR tests are
excluded and several tests fail. This is cause by a recent commit
7b44d0b which attempted to resolve MDEV-23230.

Even when building without WSREP/Galera support some of the MTR include
files named *wsrep* are required by other tests.

Removing the following from the CMake install macros will avoid
excluding the MTR test .inc files:
`|include/((w.*)?wsrep.*|.*galera.*)\\.inc`

All new code of the whole pull request, including one or several files
that are either new files or modified ones, are contributed under the
BSD-new license. I am contributing on behalf of my employer
Amazon Web Services, Inc.

cmake/install_macros.cmake

@@ -266,7 +266,7 @@ SET(DEBUGBUILDDIR "${BINARY_PARENTDIR}/debug" CACHE INTERNAL "Directory of debug
 FUNCTION(INSTALL_MYSQL_TEST from to)
   IF(INSTALL_MYSQLTESTDIR)
     IF(NOT WITH_WSREP)
-      SET(EXCL_GALERA "(suite/(galera|wsrep|sys_vars/[rt]/(sysvars_)?wsrep).*|include/((w.*)?wsrep.*|.*galera.*)\\.inc|std_data/(galera|wsrep).*)")
+      SET(EXCL_GALERA "(suite/(galera|wsrep|sys_vars/[rt]/(sysvars_)?wsrep).*|std_data/(galera|wsrep).*)")
     ELSE()
       SET(EXCL_GALERA "^DOES_NOT_EXIST$")
     ENDIF()