"Export as JSON" yielding corrupted data

[AdamElliott-AB]

When performing "Export as JSON", the downloaded file now includes contents from previous objects that were exported intermixed with expected object contents

[nikhilmandlik]

Testing instructions:

1. create or use 2 different objects from Tree
2. eg: 1-SWG and 2-Clock
3. export SWG object (save as SWG.json)
4. export Clock object (save as clock.json)
5. open clock.json and observe under 'openmct' SWG object details are included along with clock object details.

[akhenry]

The fix for this will be in 1.8.3 1.8.2. For now you should be able to workaround it by refreshing your browser between exports.

[shefalijoshi]

Marking as closed as the fix was merged.

[kobe1104]

Verified fixed - testathon 12/16/2021

[khalidadil]

I exported a clock and see this:

{"openmct":{"8f47c188-bf72-40e7-b3a6-d49079af10f3":{"configuration":{"baseFormat":"YYYY/MM/DD hh:mm:ss","use24":"clock24","timezone":"UTC"},"name":"A Clock","type":"clock","location":"c8e4ecff-f10d-4e1c-ad03-20f9e8ae1f78","modified":1639433773640,"identifier":{"namespace":"","key":"8f47c188-bf72-40e7-b3a6-d49079af10f3"},"persisted":1639433773642}},"rootId":"8f47c188-bf72-40e7-b3a6-d49079af10f3"}

which seems correct. Verified 12/16/2021