Remove multi-arch structure #149

Job	Run time
test (windows-2022, 18.x, npm run test-types)	30s
test (windows-2022, 18.x, npm run test-style)	25s
test (windows-2022, 18.x, npm run test-unit)	26s
test (macos-14, 18.x, npm run test-unit)	11s
test (macos-14, 18.x, npm run test-macos-key-press)	42s
	2m 14s

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