It’s not any different than your lawn other than it gets hotter.

I figured as much, but I heard grass may no longer grow there again b/c a tree used to grow there. But I'll give it a shot. Thanks.

I'd get the sidewalk fixed (if you're responsible for it) first because whatever repair work they do will destroy your grass anyway.

I'd just plant wildflowers or creeping thyme (one of the "Steppables") skip the grass entirely.

Heck strips can be...well, heck...due to the hotter conditions from the road and sidewalk, and dry soil, but other than those "minor" challenges...

...cough...

They'll need more watering and a bit more care at all times.

Trees having been there or not, fortunately, don't generally matter, although some can be temporarily allelopathic (suppress the growth of other plants). That doesn't last long---certainly not six years. Not even six months. :-) Although they can also tap resources that do end up in the wood that got carted away, that's restored by fertilization or soil testing and replacing it if required.

I "second" fix the walk first as doing so later would be to some degree destructive to the surrounding area.

I would wait until the existing weeds come out of dormancy and enter into active growth, so that can be killed with glyphosate. Kill them. Plant sod and keep it well watered. No worry that there has been a tree there in the past.