CMCL-1699: Focal Length and Aperture not updating with auto-focus

[glabute]

Purpose of this PR

CMCL-1699. See ticket for repro project.

Resolved an issue where changes to Focal Length and Aperture in CinemachineVolumeSettings were not applied when auto-focus was enabled. The fix ensures these properties are now correctly updated and reflected in the dynamic DepthOfField settings.

Profile assets are not intended to change dynamically, so really this is just a convenience for authoring.

Testing status

• Added an automated test
• Passed all automated tests
• Manually tested

Documentation status

• Updated CHANGELOG
• Updated README (if applicable)
• Commented all public classes, properties, and methods
• Updated user documentation

Technical risk

low

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Additional details and impacted files

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[alexzaranek]

Changes look good 👍