Not sure this is helpful, but the HIG for Alerts says the cancel button should be the bold one:
"Identify destructive buttons. If an alert button results in a destructive action, such as deleting content, set the button’s style to Destructive so that it gets appropriate formatting by the system. For developer guidance, see the UIAlertActionStyleDestructive constant of UIAlertAction. Additionally, provide a Cancel button so people can safely opt out of the destructive action. Make the Cancel button bold by marking it as the default button."
Topic:
UI Frameworks
SubTopic:
SwiftUI
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