Update subtree/library to 2025-08-07#449

Merged

tautschnig merged 8 commits intosubtree/libraryfrom

update-subtree/library

Aug 12, 2025

Commits on Aug 2, 2025

Change visibility of Args new function
chotchki
authored

Commits on Aug 4, 2025

Correct the use of `must_use` on btree::IterMut
JonathanBrouwer
committed

Commits on Aug 5, 2025

Renamed `isolate_most_least_significant_one` functions
okaneco
committed