Fix msl wait time extraction in GC

[janvorli]

There is a bug in the gc_heap::get_msl_wait_time implementation that was introduced in .NET 9. The function has two output arguments soh_msl_wait_time and uoh_msl_wait_time, but instead of updating the values these args point to, it updates the args themselves. So it never reads out any value.

This change fixes it.

Close #134492

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[janvorli]

/backport to release/11.0

[github-actions]

Started backporting to release/11.0 (link to workflow run)

[janvorli]

/backport to release/10.0

[github-actions]

Started backporting to release/10.0 (link to workflow run)

[github-actions]

@janvorli backporting to release/10.0 failed, the patch most likely resulted in conflicts. Please backport manually!

git am output

$ git cherry-pick 097dbabb2ce276f44a682c7a29d345443f993239

CONFLICT (modify/delete): src/coreclr/gc/dynamic_heap_count.cpp deleted in HEAD and modified in 097dbabb2ce (Fix msl wait time extraction in GC (#135022)).  Version 097dbabb2ce (Fix msl wait time extraction in GC (#135022)) of src/coreclr/gc/dynamic_heap_count.cpp left in tree.
error: could not apply 097dbabb2ce... Fix msl wait time extraction in GC (#135022)
hint: After resolving the conflicts, mark them with
hint: "git add/rm <pathspec>", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".
hint: Disable this message with "git config set advice.mergeConflict false"


$ git am --3way --empty=keep --ignore-whitespace --keep-non-patch changes.patch

Applying: Fix msl wait time extraction in GC
Using index info to reconstruct a base tree...
A	src/coreclr/gc/dynamic_heap_count.cpp
Falling back to patching base and 3-way merge...
CONFLICT (modify/delete): src/coreclr/gc/dynamic_heap_count.cpp deleted in HEAD and modified in Fix msl wait time extraction in GC.  Version Fix msl wait time extraction in GC of src/coreclr/gc/dynamic_heap_count.cpp left in tree.
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config set advice.mergeConflict false"
Patch failed at 0001 Fix msl wait time extraction in GC
Error: The process '/usr/bin/git' failed with exit code 128

Link to workflow output