BUG: Fluid does not correctly resolve path references on FusionPathProxy

[kdambekalns]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

This is probably a variant of an issue thought to be fixed with #3041.

As I found out today, this does not work when you use {image.title} in Fluid and image is a FusionPathProxy:

1. StandardVariableProvider checks for ArrayAccess, FusionPathProxy provides that. offsetExists() and offsetGet() only check for the offset directly in the partial fusion tree – there we have no title
2. Now $subject is an object (our FusionPathProxy), but has no matching get/set/is/property
3. Our TemplateVariableContainer is getting null back, and thus exits in

   flow-development-collection/Neos.FluidAdaptor/Classes/Core/ViewHelper/TemplateVariableContainer.php

   Line 37 in 129306a

   $subject = $this->getBooleanValue($path);

   – that results in null again.
4. title ends up as null

Expected Behavior

The title should be taken from the assigned image.

Steps To Reproduce

No response

Environment

- Flow: 9.0.0-beta10
- PHP: 8.3

Anything else?

No response