Optimize approx_distinct on Utf8View #21039
Description
Is your feature request related to a problem or challenge?
We can hash inline strings directly and pass the hash value to HLL, rather than producing a str and passing it to HLL -- this might be a nice speed win for the case when many/most inputs are short strings. Idea from @Dandandan in #21037
Describe the solution you'd like
No response
Describe alternatives you've considered
No response
Additional context
No response