Swift masking property with computed var from extension should fail

ExtensionMaskingProperty.playground

// This fails in an isolated playground as expected,
// but when the original struct is in an SPM package
// and the extension is in my app it does not,
// and the extension version is what ultimately gets called

public struct Test {
    public var property: String
}

extension Test {
    var property: String { "extension" }
}