unit/test-gatt: Add TP/GAW/SR/BI-25-C test
unit/test-gatt: Add TP/GAW/SR/BI-25-C test

Verify that a Generic Attribute Profile server can detect a Write
long characteristic descriptor Request with an invalid characteristic
handle and issue an Invalid Handle Response.

pstglia/external-bluetooth-bluez,silent-snowman/bluez,ComputeCycles/bluez,pkarasev3/bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,mapfau/bluez,pstglia/external-bluetooth-bluez,mapfau/bluez,silent-snowman/bluez,pstglia/external-bluetooth-bluez,ComputeCycles/bluez,pkarasev3/bluez,pkarasev3/bluez,pkarasev3/bluez,ComputeCycles/bluez,ComputeCycles/bluez,silent-snowman/bluez,mapfau/bluez,mapfau/bluez