[Pitch] Allow Property Wrappers on Let Declarations

[hborla (Holly Borla)]

nonisolated wrapped properties

Using nonisolated with wrapped properties

Consider the following code: @propertyWrapper struct W { var wrappedValue: Int { .zero } var projectedValue: Int { .max } } @MainActor class C { @W nonisolated var value // error: 'nonisolated' is not supported on properties with property wrappers nonisolated func test() { _ = value // error: main actor-isolated property 'value' can not be referenced from a non-isolated context _ = $value // error: main actor-isolated property '$value' can not be referenced from a non-isolate…