The prior change tracked the "no slide" intent via a mutable flag on Nav
that every navigate method had to reset. Replace it with a per-entry
hint: navBottomBar writes SKIP_SLIDE_ANIMATION_KEY=true to the new
destination's savedStateHandle, and composableFromEnd reads it off
targetState (forward) / initialState (pop).
Benefits:
- No shared mutable state; no reset bookkeeping in nav/newStack/popUpTo.
- No race between interleaved navigate calls.
- Pop animations are automatically consistent with how the entry was
entered - backing out of a bottom-bar tab now also fades.
Claude
f59597c55f