minor #734 Drop deprecated namedExports option (bocharsky-bw)

This PR was merged into the 2.x branch.

Discussion
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Drop deprecated namedExports option

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| Tickets       | Fix #733 <!-- prefix each issue number with "Fix #", no need to create an issue if none exist, explain below instead -->
| License       | MIT

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Commits
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6633d9b Drop deprecated namedExports option

Author: weaverryan

rollup.config.js

@@ -89,11 +89,7 @@ module.exports = files.map((file) => {
                     emitDeclarationOnly: true,
                 }
             }),
-            commonjs({
-                namedExports: {
-                    'react-dom/client': ['createRoot'],
-                },
-            }),
+            commonjs(),
             wildcardExternalsPlugin(peerDependencies),
             moveTypescriptDeclarationsPlugin(packageRoot),
         ],