fix(esm): make ESM exports explicit in index.mjs and utilities.mjs

Fixes #1228

Vite fails with the error:

```
Uncaught SyntaxError: The requested module '/@fs/Users/.../node_modules/.vite/app/deps/html-react-parser.js?v=719515aa' does not provide an export named 'Element' (at list.tsx:6:31)
```

Author: remarkablemark

esm/index.mjs

@@ -1,5 +1,13 @@
 import HTMLReactParser from '../lib/index.js';
 
-export * from '../lib/index.js';
+export {
+  Comment,
+  Element,
+  ProcessingInstruction,
+  Text,
+  attributesToProps,
+  domToReact,
+  htmlToDOM,
+} from '../lib/index.js';
 
 export default HTMLReactParser.default || HTMLReactParser;

esm/utilities.mjs

@@ -1 +1,8 @@
-export * from '../lib/utilities.js';
+export {
+  isCustomComponent,
+  setStyleProp,
+  PRESERVE_CUSTOM_ATTRIBUTES,
+  ELEMENTS_WITH_NO_TEXT_CHILDREN,
+  canTextBeChildOfNode,
+  returnFirstArg,
+} from '../lib/utilities.js';