feat(auth): Add WebAuthn/passkey support across all platforms #3396

Job	Run time
test / test-flutter-vm (stable, any)	2m 44s
test / test-flutter-vm (stable, 3.35.0)	2m 1s
e2e_ios_test	0s
e2e_android_test	0s
e2e_windows_test	0s
e2e_web_test	0s
e2e_linux_test	0s
	4m 45s

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