Fix #84344 to ensure sufficient stack by calling RuntimeHelpers.EnsureSufficientExecutionStack()#122761

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eriawan wants to merge 3 commits intodotnet:mainfrom

eriawan:fix-recursive-system.io-directory-dotnetruntime-issue

Commits on Dec 31, 2025

Call RuntimeHelpers.EnsureSufficientExecutionStack() to ensure sufficient stack space when calling Directory.Delete recursively.
eriawan
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add the using namespac of System.Runtime.CompilerServices in FieSystem.Unix.cs
eriawan
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Add a unit test to test the Directory.Delete with recursive set to true, and ensure the nested depth is large enough but not too large as the original scenario (14000). I use 6000 to test whether t…
eriawan
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