[devtools] Use the wasm by default in release builds

[kenzieschmoll]

Right now, DevTools is build using the --wasm flag, which uses dual compile to support both the JS + CanvasKit configuration and Wasm + skwasm configuration. Users will get the JS build by default, but they can opt-in to using wasm by enabling a DevTools setting.

After gathering early feedback and addressing any major issues uncovered from the experimental rollout, we should enable wasm by default and remove the experimental setting.

The goal is to complete this before the Q1 2025 stable release.