gh-112027: Don't print mimalloc warning after mmap() call

[colesbury]

This changes the warning to a "verbose"-level message in prim.c. The address passed to mmap is only a hint -- it's normal for mmap() to sometimes not respect the hint and return a different address.

• Issue: mimalloc: warning: unable to directly request hinted aligned OS memory #112027

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Ubuntu NoGIL 3.x has failed when building commit 9afb0e1.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/1225/builds/980) and take a look at the build logs.
4. Check if the failure is related to this commit (9afb0e1) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/1225/builds/980

Failed tests:

• test_tools
• test_math

Summary of the results of the build (if available):

==

Click to see traceback logs

remote: Enumerating objects: 13, done.        
remote: Counting objects:   7% (1/13)        
remote: Counting objects:  15% (2/13)        
remote: Counting objects:  23% (3/13)        
remote: Counting objects:  30% (4/13)        
remote: Counting objects:  38% (5/13)        
remote: Counting objects:  46% (6/13)        
remote: Counting objects:  53% (7/13)        
remote: Counting objects:  61% (8/13)        
remote: Counting objects:  69% (9/13)        
remote: Counting objects:  76% (10/13)        
remote: Counting objects:  84% (11/13)        
remote: Counting objects:  92% (12/13)        
remote: Counting objects: 100% (13/13)        
remote: Counting objects: 100% (13/13), done.        
remote: Compressing objects:  16% (1/6)        
remote: Compressing objects:  33% (2/6)        
remote: Compressing objects:  50% (3/6)        
remote: Compressing objects:  66% (4/6)        
remote: Compressing objects:  83% (5/6)        
remote: Compressing objects: 100% (6/6)        
remote: Compressing objects: 100% (6/6), done.        
remote: Total 7 (delta 5), reused 1 (delta 0), pack-reused 0        
From https://github.com/python/cpython
 * branch                  main       -> FETCH_HEAD
Note: switching to '9afb0e1606cad41ed57c42ea0a53ac90433f211b'.

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Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at 9afb0e1606 gh-112027: Don't print mimalloc warning after mmap() call (gh-113372)
Switched to and reset branch 'main'

make: *** [Makefile:2092: buildbottest] Error 2