Several months ago one of the MS reps advised me on this thread that this is not a mistake, rather it is now a "feature." I presume it has to do with privacy. Yes, I do miss it. Yes, I do wish they made it optional, but mediocre Microsoft support for Windows is now the norm.
I doubt that it's a privacy issue. If that were the case, the auto-suggest list wouldn't be peppered with file and URL references with no option to clear them. I think it's just because they changed search to display Results-as-you-type, which is somewhat at odds with having a history drop down.
The simple solution is to give the user a checkbox to select their preferred search style. Wait-for-Enter and include history (as it was in the early releases of Windows 11) or Results-as-you-type without history (as it is now). Results-as-you-type plus history is also possible, but it's trickier to program.