Use proper react release channel for `react-dom/static` aliases (#68663)
Now that `react-dom/static` is also available outside of the
experimental channel, we don't need to hard-code the react release
channel in the bundle aliases anymore.
Without this fix, `react-dom` would end up twice in our non-experimental
server runtime bundles with the changes in #68637.
<img width="1479" alt="react-dom twice in bundle"
src="https://github.com/user-attachments/assets/ed50e9ec-b984-496b-92e1-69515f2afbc8">