Bring back iOS SetNeedsLayout propagation via inheritance

[albyrock87]

Description of Change

#26629 removed SetNeedsLayout propagation via inheritance, this was needed to fix #24996.
Unfortunately, this also removed the ability to intercept and stop propagation as needed.

A good option here would be to make IPlatformMeasureInvalidationController public and change void InvalidateMeasure(bool isPropagating = false); return type to bool, so that anyone could stop propagation in case of need.
This seems to me the best and clean option, but unless MAUI team makes an exception, we cannot touch PublicAPI in a Service Release.

For such reason, this PR brings back SetNeedsLayout propagation, but it also includes a way to tell if the SetNeedsLayout is being triggered by MAUI so we can avoid the issue described in #24996.

Issues Fixed

Fixes #28410

[dotnet-policy-service]

Hey there @albyrock87! Thank you so much for your PR! Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

[jsuarezruiz]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[jsuarezruiz]

LGTM. However, I think the previous changes have sense but just enabling a way to stop the propagation like InvalidateMeasure(bool isPropagating = false); So, let's create a new Spec for .NET 10 and you could work on it if want.

[albyrock87]

@jsuarezruiz if creating an [Experimental] Public API with bool InvalidateMeasure(bool isPropagating = false); is not acceptable in .NET 9 then I can probably refactor this a bit more so that we can include this signature and let SetNeedsLayout invoke it so that creating the PR on .NET 10 will be a no-brainer.

This will also spare me some refactoring on #28225

Something like:

public override void SetNeedsLayout()
{
    if (IPlatformMeasureInvalidationController.IsInvalidating)
    {
        // TODO: NET10 move propagation loop back to iOS `ViewExtensions`
        var controller = (IPlatformMeasureInvalidationController)this;
        if (controller.InvalidateMeasure(IPlatformMeasureInvalidationController.IsPropagatingInvalidation))
        {
	    this.InvalidateParentMeasure();
        }
    } else {
        base.SetNeedsLayout();
    }
}

bool IPlatformMeasureInvalidationController.InvalidateMeasure(bool isPropagating)
{
    base.SetNeedsLayout();
    return true;
}

[PureWeen]

Still chatting with Alberto

[albyrock87]

Not needed anymore. Let's try to evolve on the existing implementation.