MDEV-34313: compile WITHOUT_SERVER and WSREP=ON

CMake WSREP=ON has some implications for client
executables so still present this as an option
when compiling WITHOUT_SERVER. In this case
default to ON for maximium compatibility of
the build client executables and libraries.

cmake/wsrep.cmake

@@ -17,7 +17,9 @@
 #
 # Galera library does not compile with windows
 #
-IF (NOT WITHOUT_SERVER)
+IF(WITHOUT_SERVER)
+  OPTION(WITH_WSREP "Galera server compatibility in build client utilities" ON)
+ELSE()
 IF(UNIX)
   SET(with_wsrep_default ON)
 ELSE()