[DevTools] Separate RDT Fusebox into single-panel entry points (#30708)

## Summary

Separate function entry points for `react-devtools-fusebox` into
`initializeComponents` and `initializeProfiler`. The motivation behind
this change is to separate these tabs into top-level Chrome DevTools
panels (aligned with web) in React Native.

## How did you test this change?

- Build `react-devtools-fusebox` and load into local
[rn-chrome-devtools-frontend](https://github.com/facebookexperimental/rn-chrome-devtools-frontend)
project with updated call sites.

<img width="1933" alt="image"
src="https://github.com/user-attachments/assets/202d32a1-b8da-4936-b0e1-04875a30f256">

<img width="1949" alt="image"
src="https://github.com/user-attachments/assets/39dbe154-989c-4f76-b103-aa19f07a3b9c">

✅ Tabs can be separately initialised in individual Chrome DevTools
panels