[llvm] [BasicAA] Enable separate storage hints by default (PR #76864)

[David Goldblatt via llvm-commits]

davidtgoldblatt wrote:

Woops -- merged before checks finished (on autopilot -- haven't used the github workflow in a while). Feels safe enough to leave as is for now, but sorry in advance to posterity if this ends up breaking something. Please feel free to revert if so.

https://github.com/llvm/llvm-project/pull/76864