Problem:
There were no difference between the fact that the avatar is not changed and the avatar is deleted. The same for bio and displayName
On NIM, this state was simply rewritten
Solution
(The problem was discovered due to the fact that if the picture does not change, then Nim receives a base64 encoded source - instead of the path to the new Avatar. Which Status go could not parse as a file.)
On the QML side, if we see that there have been changes, we add changes to changesMap Json, if there are no changes, then do not add. (This is the way to implement Option).
On the NIM Side - convert to saveData
On the Module side - distinguish Nil from an empty string
fixes#14464
688238fdd3