Closes#21320
This PR introduces a list of deprecated icons that should no longer be displayed in the UI. These icons are kept for backward compatibility but are now filtered out from:
1. The emoji picker component
2. The icons page listing
The deprecated icons include:
- Duplicate icons that have better alternatives (e.g., `apple-grey.svg` → `apple-black.svg`)
- PNG versions of icons that already have SVG versions (e.g., `aws.png` → `aws.svg`)
- Monochrome variants that are no longer needed (e.g., `docker-white.svg`)
Jake Howell
f524e00df7