Improve take performance on RunEndArray

[a10y]

Currently it calls find_physical_index in a hot loop. For dense takes, this can be quite a lot of overhead.

[robert3005]

FWIW I think we should have search_sorted for numerical arrays that just casts to u64/usize and avoids creating scalars. #795

[robert3005]

Another thing would be to update our search_sorted to use the algorithm from latest rust std lib which is said to be 20-30% faster. Doubt we will have comparable speed up but likely there will be some gain

[a10y]

This was handled in a combo of #840 + #851