file-transfer example: Updated receiver to properly advertise capabilities.
file-transfer example: Updated receiver to properly advertise capabilities.

Fixes: fd.o#28651 - Cannot receive files using gabble 0.9

Author: Daniele E. Domenichelli
Reviewed-by: Andre Moreira Magalhaes (andrunko) <ab0884a012ded4e51536cd4c0ccf5fa57e1a637b@collabora.co.uk>

special/telepathy-qt-upstream,TelepathyIM/telepathy-qt,freedesktop-unofficial-mirror/telepathy__telepathy-qt,anantkamath/telepathy-qt,tiagosh/telepathy-qt,TelepathyIM/telepathy-qt,TelepathyQt/telepathy-qt,TelepathyIM/telepathy-qt,TelepathyIM/telepathy-qt,detrout/telepathy-qt,TelepathyIM/telepathy-qt,tiagosh/telepathy-qt,freedesktop-unofficial-mirror/telepathy__telepathy-qt,detrout/telepathy-qt,detrout/telepathy-qt,freedesktop-unofficial-mirror/telepathy__telepathy-qt4,special/telepathy-qt-upstream,anantkamath/telepathy-qt,special/telepathy-qt-upstream,freedesktop-unofficial-mirror/telepathy__telepathy-qt,TelepathyQt/telepathy-qt,freedesktop-unofficial-mirror/telepathy__telepathy-qt4,freedesktop-unofficial-mirror/telepathy__telepathy-qt,TelepathyQt/telepathy-qt,tiagosh/telepathy-qt,freedesktop-unofficial-mirror/telepathy__telepathy-qt4,anantkamath/telepathy-qt,freedesktop-unofficial-mirror/telepathy__telepathy-qt4,tiagosh/telepathy-qt,TelepathyQt/telepathy-qt