Map FABs and controls sit at z-[1000]–z-[1001]. The Sheet overlay/content
were at z-50 (= 50), so the map buttons punched through on top.
Bumped SheetOverlay and SheetContent from z-50 → z-[2100], which is above
the highest map element (z-[2001] for the spot detail modal) so the slide-in
drawer always fully covers the map UI.
Co-authored-by: shakespeare.diy <assistant@shakespeare.diy>