fix: avoid clobbering existing lists

[davidmh]

I've found a small issue with the quickfix list integration.

Setting the replace flag when sending the TSC results into the quickfix list truncates existing results.

That's a problem because the quickfix list keeps a history of all the lists generated during the session, and you can navigate the history with :colder and :cnewer. Which means that populating the list from tsc.nvim hijacks whatever list spot we were displaying.

For example, imagine you have the lists in :chistory

	order	title
	1	grug-far results 1
	2	grug-far results 2
*	3	some other list

Then you navigate back to see the second list with :colder.

	order	title
	1	grug-far results 1
*	2	grug-far results 2
	3	some other list

Then you use TSC and send the results to the list:

	order	title
	1	grug-far results 1
*	2	TSC
	3	some other list

Now I've lost grug-far results 2.

I'm updating the quickfix action to replace the list only if the existing list was created by TSC. That way we can keep the exiting flow that shows the latest state regarding TSC, and avoid destroying unrelated lists.