Provide icon to edge devtools. (facebook#26543)

<!--
  Thanks for submitting a pull request!
We appreciate you spending the time to work on these changes. Please
provide enough information so that others can review your pull request.
The three fields below are mandatory.

Before submitting a pull request, please make sure the following is
done:

1. Fork [the repository](https://github.com/facebook/react) and create
your branch from `main`.
  2. Run `yarn` in the repository root.
3. If you've fixed a bug or added code that should be tested, add tests!
4. Ensure the test suite passes (`yarn test`). Tip: `yarn test --watch
TestName` is helpful in development.
5. Run `yarn test --prod` to test in the production environment. It
supports the same options as `yarn test`.
6. If you need a debugger, run `yarn test --debug --watch TestName`,
open `chrome://inspect`, and press "Inspect".
7. Format your code with
[prettier](https://github.com/prettier/prettier) (`yarn prettier`).
8. Make sure your code lints (`yarn lint`). Tip: `yarn linc` to only
check changed files.
  9. Run the [Flow](https://flowtype.org/) type checks (`yarn flow`).
  10. If you haven't already, complete the CLA.

Learn more about contributing:
https://reactjs.org/docs/how-to-contribute.html
-->

## Summary
Addresses facebook#26352.

This PR explicitly passes an icon to `chrome.devtools.panels.create()`,
so that edge devtools will display the icon when in [Focus
Mode](https://learn.microsoft.com/en-us/microsoft-edge/devtools-guide-chromium/experimental-features/focus-mode).

<!--
Explain the **motivation** for making this change. What existing problem
does the pull request solve?
-->

## How did you test this change?
Passing test suite (`yarn test` & `yarn test --prod`) ✅ 
Passing lint (`yarn linc`) ✅ 
Passing type checks (`yarn flow`) ✅ 

**Visual Testing**

Before Changes             | After Changes
:-------------------------:|:-------------------------:

![](https://user-images.githubusercontent.com/15645169/229591145-fe99df06-e2e3-4f21-ae31-f770d584ca6c.png)
|
![](https://user-images.githubusercontent.com/15645169/229591594-26c6cbaf-f345-4367-b234-8f3c8ab3ccb1.png)
<!--
Demonstrate the code is solid. Example: The exact commands you ran and
their output, screenshots / videos if the pull request changes the user
interface.
How exactly did you verify that your PR solves the issue you wanted to
solve?
  If you leave this empty, your PR will very likely be closed.
-->

packages/react-devtools-extensions/src/main.js

@@ -475,7 +475,7 @@ function createPanelIfReactLoaded() {
 
       chrome.devtools.panels.create(
         IS_CHROME || IS_EDGE ? '⚛️ Components' : 'Components',
-        '',
+        IS_EDGE ? 'icons/production.svg' : '',
         'panel.html',
         extensionPanel => {
           extensionPanel.onShown.addListener(panel => {
@@ -506,7 +506,7 @@ function createPanelIfReactLoaded() {
 
       chrome.devtools.panels.create(
         IS_CHROME || IS_EDGE ? '⚛️ Profiler' : 'Profiler',
-        '',
+        IS_EDGE ? 'icons/production.svg' : '',
         'panel.html',
         extensionPanel => {
           extensionPanel.onShown.addListener(panel => {