[macOS] CanResize is ignored when SystemDecorations = None

[BAndysc]

Describe the bug

Avalonia/native/Avalonia.Native/src/OSX/WindowImpl.mm

Lines 562 to 578 in 143399f

	switch (_decorations) {
	case SystemDecorationsNone:
	s = s | NSWindowStyleMaskFullSizeContentView;
	break;
	case SystemDecorationsBorderOnly:
	s = s | NSWindowStyleMaskTitled | NSWindowStyleMaskFullSizeContentView;
	break;
	case SystemDecorationsFull:
	s = s | NSWindowStyleMaskTitled | NSWindowStyleMaskClosable;
	if ((_canResize && _isEnabled) || _transitioningWindowState) {
	s = s | NSWindowStyleMaskResizable;
	}
	break;
	}

here, NSWindowStyleMaskResizable is applied only if SystemDecorations = Full, otherwise this flag is not applied and the window is not resizable. I don't think there is a reason to apply it only in SystemDecorations = Full case.
For the Classic Theme, I wanted to disable decorations on macOS, which causes rounded corners and adds shadow, but the window still should be resizable when CanResize = true.

To Reproduce

Create a window, set SystemDecorations = None and set CanResize = true (default) - the window won't be resizable.

Expected behavior

No response

Avalonia version

11.1.x

OS

macOS

Additional context

No response

[timunie]

I think this is an issue only for mac-os

As you seem to already know a possible solution, a PR would be welcome.