[dart:io] Adds Platform.architecture#56959

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RossComputerGuy wants to merge 2 commits intodart-lang:mainfrom RossComputerGuy:feat/target-arch

+181-6

Commits on Oct 24, 2024

[dart:io] Adds Platform.architecture
RossComputerGuy
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Commits on Oct 25, 2024

[dartdev] Add --target-arch flag to pair with --target-os
RossComputerGuy
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