fix(cli): replace querystring with URLSearchParam (#45125)

Summary:
[`querystring`](https://www.npmjs.com/package/querystring) package is deprecated. In this Pull Request I've replaced usage of `querystring` with `URLSearchParam` what is recommended by Node.js.

It's also causing a warning when installing dependencies inside a React Native app:
```
warning react-native > react-native/community-cli-plugin > querystring@0.2.1: The querystring API is considered Legacy. new code should use the URLSearchParams API instead.
```

## Changelog:

[INTERNAL] [FIXED] - Replace `querystring` package with `URLSearchParam`

Pull Request resolved: https://github.com/facebook/react-native/pull/45125

Test Plan:
Params should be parsed in the same way and warning shouldn't be presented.

js1 jest xplat/js/tools/metro/packages/metro/src/cli/__tests__/parseKeyValueParamArray-test.js

Reviewed By: cipolleschi

Differential Revision: D58948498

Pulled By: GijsWeterings

fbshipit-source-id: 79b1f7b3feae230d2d3641205c513b98b3fda511

packages/community-cli-plugin/src/utils/parseKeyValueParamArray.js

@@ -9,8 +9,6 @@
  * @oncall react_native
  */
 
-import querystring from 'querystring';
-
 export default function parseKeyValueParamArray(
   keyValueArray: $ReadOnlyArray<string>,
 ): Record<string, string> {
@@ -23,8 +21,11 @@ export default function parseKeyValueParamArray(
     if (item.indexOf('&') !== -1) {
       throw new Error('Parameter cannot include "&" but found: ' + item);
     }
-    Object.assign(result, querystring.parse(item));
+    const params = new URLSearchParams(item);
+    params.forEach((value, key) => {
+      // $FlowExpectedError[prop-missing]
+      result[key] = value;
+    });
   }
-
   return result;
 }