refactor(react, react-router): build works on windows (#28904)

Issue number: Internal
---------

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## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->

React and React Router packages do not build correctly on Windows
because certain dependencies were not marked as external.
## What is the new behavior?
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this PR. -->

- 3rd party packages are correctly marked as external


## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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## Other information

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screenshots of how the component looks before and after the change. -->

packages/react-router/rollup.config.mjs

@@ -1,4 +1,5 @@
 import typescript from '@rollup/plugin-typescript';
+const external = ['react', 'react-dom', 'react-router', 'react-router-dom', 'history', 'tslib'];
 
 export default {
   input: 'src/index.ts',
@@ -9,8 +10,8 @@ export default {
       sourcemap: true,
     }
   ],
-  external: (id) => !/^(\.|\/)/.test(id),
   plugins: [
     typescript(),
   ],
+  external: id => external.includes(id) || id.startsWith('@ionic/core') || id.startsWith('ionicons') || id.startsWith('@ionic/react'),
 };

packages/react/rollup.config.mjs

@@ -1,4 +1,5 @@
 import typescript from '@rollup/plugin-typescript';
+const external = ['react', 'react-dom', 'react-router', 'react-router-dom', 'history', 'tslib'];
 
 export default {
   input: 'src/index.ts',
@@ -11,8 +12,8 @@ export default {
       sourcemap: true,
     }
   ],
-  external: (id) => !/^(\.|\/)/.test(id),
   plugins: [
     typescript(),
   ],
+  external: id => external.includes(id) || id.startsWith('@ionic/core') || id.startsWith('ionicons'),
 };