[next] avoid dbus-glib type for TpBaseChannelFillPropertiesFunc

Submitted by Simon McVittie

Assigned to Telepathy bugs list

Link to original bug (#77194)

Description

+++ This bug was initially created as a clone of Bug #76369 +++

We should make sure that dbus-glib isn't exposed in our high-level API.

TpBaseChannelFillPropertiesFunc takes a GHashTable<string,GValue>.

Version: git master

Depends on

• Bug 77189

Blocking

• Bug 68661
• Bug 76369
• Bug 77196