ShellPkg-Cd: Ensure all valid cd targets are handled properly

ShellPkg-Cd: Ensure all valid cd targets are handled properly

ShellPkg-Cd: Ensure all valid cd targets are handled properly

Make sure that PathCleanUpDirectories() is called on all valid targets
of the cd command.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jim Dailey <jim_dailey@dell.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>