Fixed regression in the ambient probe intensity for volumetric clouds.

[anisunity]

When adding the code that changes which ambient probe is used. I removed pieces of the code that i thought were optional (spoiler alert, they are not). This adds them back and restores a look that is closer to what we expect.

@pierre-unity is going to update the LUT so I have to wait before updating the screenshots

Testing status
Tested on the samples, looks good now.
This will break a bunch of clouds tests

[github-actions]

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[anisunity]

This PR now also includes:

• An update of the presets by @pierre-unity
• A fix for the sun leaking behind the clouds
• A fix for an artifact appearing when in non local mode and lowest cloud altitude very low.

[pierre-unity]

tested locally

[anisunity]

Merged #5556 into this PR

[anisunity]

In this PR i've added a fix to this bug https://fogbugz.unity3d.com/f/cases/1364152/

[TomasKiniulis]

Checked with Anis on concerns I had, looks all good assuming CI is green.

[anisunity]

Updated all screenshots and relaunched yamato