Fix point light shadows breaking when shadow res decreases

[boxrocket6803]

Summary

Shadows on point lights would break if the desired resolution decreased.

2026-04-06.19-02-19.mp4

Now they don't

Implementation Details

ShadowMapper.Projected had

// Do we want a bigger resolution for this shadow map now?
if ( cacheEntry.CurrentResolution != desiredResolution )

whereas ShadowMapper.ProjectedCube had

// Do we want a bigger resolution for this shadow map now?
if ( cacheEntry.CurrentResolution < desiredResolution )

Spotlights work and point lights didn't, so despite the comment I believe != to be correct. Not 100 percent sure though, this could be an issue with something else that was hidden by spotlight comparison being wrong.

Checklist

• Code follows existing style and conventions
• No unnecessary formatting or unrelated changes
• Public APIs are documented (if applicable)
• Unit tests added where applicable and all passing
• I’m okay with this PR being rejected or requested to change 🙂