Core Changes
- do not apply sass loader on existing loaders: #50308
- Add missing react-dom/client alias: #50324
- Fix missing error when using Actions on the client layer without enabling the feature flag: #50257
- remove allowlist, only use denylist, enable newly passing tests: #50325
Misc Changes
Credits
Huge thanks to @ijjk, @sokra, @huozhi, and @shuding for helping!