[release/8.0] [mono] Enable System.IO.Hashing tests on ios and disable them on tvos

[github-actions]

Backport of #90984 to release/8.0

/cc @ivanpovazan

Customer Impact

This change contributes towards having a green runtime-extra-platforms pipeline by keeping the same test coverage on iOS-like platforms.

Testing

This can be verified by inspecting whether System.IO.Hashing.Tests have been ran and passed as part of ios-arm64 Release AllSubsets_Mono job (e.g., https://helix.dot.net/api/jobs/a48cda4a-ca96-46e6-a3c0-43c11ea1a441/workitems?api-version=2019-06-17).
Additionally, it should be verified that the tvos-arm64 Release AllSubsets_Mono is not running the System.IO.Hashing.Tests tests

Risk

This is a CI infrastructure change with low risk.

IMPORTANT: If this backport is for a servicing release, please verify that:

• The PR target branch is release/X.0-staging, not release/X.0.

• If the change touches code that ships in a NuGet package, you have added the necessary package authoring and gotten it explicitly reviewed.

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Tagging subscribers to this area: @dotnet/area-infrastructure-libraries
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Issue Details

---

Backport of #90984 to release/8.0

/cc @ivanpovazan

Customer Impact

Testing

Risk

IMPORTANT: If this backport is for a servicing release, please verify that:

• The PR target branch is release/X.0-staging, not release/X.0.

• If the change touches code that ships in a NuGet package, you have added the necessary package authoring and gotten it explicitly reviewed.

Author:	github-actions[bot]
Assignees:	-
Labels:	area-Infrastructure-libraries
Milestone:	-

[ghost]

Tagging subscribers to this area: @directhex
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Backport of #90984 to release/8.0

/cc @ivanpovazan

Customer Impact

This change contributes towards having a green runtime-extra-platforms pipeline by keeping the same test coverage on iOS-like platforms.

Testing

This can be verified by inspecting whether System.IO.Hashing.Tests have been ran and passed as part of ios-arm64 Release AllSubsets_Mono job (e.g., https://helix.dot.net/api/jobs/a48cda4a-ca96-46e6-a3c0-43c11ea1a441/workitems?api-version=2019-06-17).
Additionally, it should be verified that the tvos-arm64 Release AllSubsets_Mono is not running the System.IO.Hashing.Tests tests

Risk

This is a CI infrastructure change with low risk.

IMPORTANT: If this backport is for a servicing release, please verify that:

• The PR target branch is release/X.0-staging, not release/X.0.

• If the change touches code that ships in a NuGet package, you have added the necessary package authoring and gotten it explicitly reviewed.

Author:	github-actions[bot]
Assignees:	-
Labels:	Servicing-consider, area-Infrastructure-mono
Milestone:	-

[ivanpovazan]

/azp run runtime-ioslike

[azure-pipelines]

Azure Pipelines could not run because the pipeline triggers exclude this branch/path.

[SamMonoRT]

@marek-safar@jeffschwMSFT - this one is ready as well, needs your approval. This ensures a cleaner CI on tvos, while enabling the test on iOS. No code product changes.

[jeffschwMSFT]

approved. this can be merged when ready

[SamMonoRT]

cc @carlossanlop - this is ready to be merged