julia

7647ab57 - Use arch-independent magic number as start seed for Preferences hash (#39274)

Use arch-independent magic number as start seed for Preferences hash (#39274) `Preferences.jl` is currently broken on 32-bit because hashing natively uses `UInt32`'s instead of `UInt64`'s. We allow `Preferences.jl` to polymorph to whichever it requires here, while eliminating a confusing large constant and simply starting from zero.