feat(Autocomplete): Add ability to customize input adornment

[seve]

https://github.com/chanzuckerberg/sci-components/blob/f6e4a0a1b1067fa0021b28dd3f672ead6a486ec4/packages/components/src/core/Autocomplete/index.tsx#L149C15-L149C27

A Figma design on single cell has a requirement for an adornment to be aligned to the start rather than the end, it would be nice to be able to have a user provided adornment (start or end), this would also allow users to provide an icon other than the search icon.

Figma