Fix guest AppHost Ctrl+C shutdown#17642

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danegsta wants to merge 12 commits into

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danegsta/ctrl-c-regression-check

Commits on May 29, 2026

Fix guest AppHost Ctrl+C shutdown

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Avoid signaling exited AppHost server PIDs

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Merge main into Ctrl+C shutdown fix

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Avoid signaling exited guest process PIDs

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Share Windows process group setup

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Align run cancellation timeout with shutdown service

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Use shorter run shutdown timeout

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Update process group signaling diagnostics

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Bound run shutdown cancellation waits

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Thread run shutdown timeout policy

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Always send Windows Ctrl+Break to process groups

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Add ProcessSignaler start time tests

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