Expose Array.Clear(Array) publicly

[GrabYourPitchforks]

Resolves #51581.

Not all calls to Array.Clear(Array, int, int) were changed. The three excluded categories are:

• where the call site occurs within an assembly which targets downlevel API surface;
• where the call site occurs within the Array unit test project itself; or
• where the call site is in code which should remain untouched for compliance purposes.

[dotnet-issue-labeler]

Note regarding the new-api-needs-documentation label:

This serves as a reminder for when your PR is modifying a ref *.cs file and adding/modifying public APIs, to please make sure the API implementation in the src *.cs file is documented with triple slash comments, so the PR reviewers can sign off that change.

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Issue Details

---

Resolves #51581.

Not all calls to Array.Clear(Array, int, int) were changed. The three excluded categories are:

• where the call site occurs within an assembly which targets downlevel API surface;
• where the call site occurs within the Array unit test project itself; or
• where the call site is in code which should remain untouched for compliance purposes.

Author:	GrabYourPitchforks
Assignees:	-
Labels:	area-System.Runtime
Milestone:	6.0.0

[stephentoub]

Nice.

[davidfowl]

So no more array.AsSpan().Clear()

[GrabYourPitchforks]

Test failures are known issue #53405.