pidgin/pidgin

Added transient-buddy back for showing the buddy menu when
release-2.x.y
2022-04-15, Belgin Știrbu
c5c98b27f755
Added transient-buddy back for showing the buddy menu when
right-clicking the topic bar.

Testing Done:
Tested on Debian and Windows. Right-clicking showed the correct context menu.

Bugs closed: PIDGIN-17523

Reviewed at https://reviews.imfreedom.org/r/1381/
VOID:POINTER,POINTER,OBJECT
BOOLEAN:OBJECT,POINTER,STRING
VOID:STRING,STRING
VOID:STRING,STRING,DOUBLE
VOID:ENUM,STRING,STRING
VOID:ENUM,STRING,STRING,BOOLEAN
VOID:FLAGS,FLAGS
VOID:STRING,STRING,OBJECT,OBJECT
VOID:POINTER,POINTER,OBJECT,OBJECT
VOID:STRING,STRING,POINTER