JIT and JIT.Directed tests timeout/hang on Android arm64 devices

[akoeplinger]

This started recently, all of the runs in the last 24 hours of these two workitems timed out.

The JIT and JIT.Directed are the most common ones but there are also occasional timeouts of other runtime tests.

Example Kusto query:

WorkItems
| where QueueName == "windows.10.amd64.android.open" and Queued >= ago(3d) and not(FriendlyName startswith "System" or FriendlyName startswith "Microsoft" or FriendlyName startswith "Common")
| summarize BadExit=countif(Status == "BadExit"), Fail=countif(Status == "Fail"), Pass=countif(Status == "Pass"), Timeout=countif(Status == "Timeout") by FriendlyName
| order by Timeout desc

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Issue Details

---

This started recently, all of the runs in the last 24 hours of these workitems timed out.

Author:	akoeplinger
Assignees:	-
Labels:	area-VM-meta-mono, blocking-clean-ci, os-android
Milestone:	-

[steveisok]

/cc @SamMonoRT

[SamMonoRT]

@fanyang-mono - can you investigate : Hopefully this isn't an actual regression, and also hoping it is not an unwanted effect of the changes done by fixing dotnet/xharness#397 ?