[AtServer] Clear the context for bad parameter syntax
[AtServer] Clear the context for bad parameter syntax

Resolves: LE-8214
Change-Id: Ia8efa02f1ae1245f16df0e237f8d1786e77f41b7

legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af