[Mac] Saving snapshot to disk disabled until relog if file picker aborted

[canny]

Might just be on Mac.

Steps to repro :

1. Pull up snapshot window

2. Click save to disk to bring up file/folder/finder window

3. DO NOT COMPLETE save - leave the file picker window open (dont click save or cancel) but then move focus to somewhere else e.g. click on group messages

4. As soon as you do this the file picker window disappears and the snapshot panel is left hanging on "saving to computer"

5. You can close the snapshot window but if you then open it again e.g. to save a new snapshot it remains per 4. hanging until you relog

This sort of thing was also happening on the build/upload panel (e.g. upload model) previously but seems to have been fixed. i.e when going through this process, the file picker panel comes up but the rest of SLV is disabled until you complete or cancel. So i think that approach just needs to be adopted for saving snapshots too..?

https://secondlife.canny.io/admin/feedback/bug-reports/p/saving-snapshot-to-disk-disabled-until-relog-if-file-picker-aborted

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[canny]

This issue has been linked to a Canny post: Saving snapshot to disk disabled until relog if file picker aborted 🎉