keyrouter: Fix build error

keyrouter: Fix build error

src/bin/inputmgr/e_keyrouter_intern.h:112:14: error: nested redefinition of 'enum _E_Keyrouter_Client_Status'
  112 | typedef enum _E_Keyrouter_Client_Status
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~
src/bin/inputmgr/e_keyrouter_intern.h:112:14: error: redeclaration of 'enum _E_Keyrouter_Client_Status'
In file included from src/bin/inputmgr/e_keyrouter_intern.h:5,
                 from src/bin/inputmgr/e_input_backend.c:7:
./src/include/e_keyrouter.h:14:14: note: originally defined here
   14 | typedef enum _E_Keyrouter_Client_Status
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~

Change-Id: I51a71eac0824aee26fa831498881ded62b750cff