Move UBO updates from render layers to tweakers

[TimSylvester]

This fits better with the long-term goal of having drawable updates only done by tweakers, centralizes the UBO updates rather than having them split across two areas, and will simplify the changes needed in the layer update methods for #2719.

[github-actions]

Bloaty Results (iOS) 🐋

Compared to main

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.2% +25.8Ki  +0.2% +32.0Ki    TOTAL

Full report: https://maplibre-native.s3.eu-central-1.amazonaws.com/bloaty-results-ios/pr-2703-compared-to-main.txt

[github-actions]

Bloaty Results 🐋

Compared to main

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.1%  +112Ki  +0.2% +69.5Ki    TOTAL

Full report: https://maplibre-native.s3.eu-central-1.amazonaws.com/bloaty-results/pr-2703-compared-to-main.txt

Compared to d387090 (legacy)

    FILE SIZE        VM SIZE    
 --------------  -------------- 
   +27% +31.7Mi  +423% +25.3Mi    TOTAL

Full report: https://maplibre-native.s3.eu-central-1.amazonaws.com/bloaty-results/pr-2703-compared-to-legacy.txt

[louwers]

Could you provide some more context?

[alexcristici]

Nice!

[sjg-wdw]

Are we done on this one?