## Test plan

Full QA

Fixes #2274

## Test plan

1. Open Cody chat history
2. Click "Export History"
3. Select a file and path of your choice to save it
4. Verify that file content contains proper json

Fixes #2287

## Changes 

Looks like we cannot do EDT actions in the
`CodyFixHighlightPass:doCollectInformation` or we are risking a
deadlock.

## Test plan

It's a bit hard to test deterministically but for me adding and removing
few special characters on an empty file was triggering IDE crash pretty
quickly (10-20 sec).
I used combination of:

`Option + \` (`«`)
`Option + P` (`Ļ`)
`Backspace`

In a random order.
Timing matters, keep changing the tempo of the keystrokes.

## Test plan

Full QA