Capture traces for updateParseTreeOnEdit

[philipp-spiess]

Capture traces for updateParseTreeOnEdit

Test plan

• Trivial, CI will check

[philipp-spiess]

@valerybugakov Saw that there's also observableParse. Should we use this instead? Not sure why we would need two places but I assume this place can be very high frequency (since it's on every document change)

[valerybugakov]

Not sure why we would need two places, but I assume this place can be very high frequency

@philipp-spiess, that's right. I didn't instrument this part because it happens on every keystroke change.