Update: we had to put back image codecs into CanvasKit Chromium because there are still use cases that need the wasm codecs. See PR for more info.

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As part of #113713 let's remove the image codecs from the CanvasKit Chromium variant.

This involves 2 things:

1. Adding the appropriate flags to the canvaskit_chromium gn target.
2. Adjusting the browserSupportsCanvaskitChromium boolean to check for availability of image codecs too.