Fix editorProps prop is ignored in RichTextInput

[ArnaudD]

Hi !

Problem

editorOptions.editorProps is currently ignored in RichTextInput. This makes it impossible to do things like this (customizing ProseMirror className for example) :

<RichTextInput
  editorOptions={{
    extensions: [
      // ...
    ],
    // https://tiptap.dev/api/editor#editor-props
    editorProps: {
      attributes: {
        class: 'my-custom-css-class',
      },
    },
  }}
  // ...
/>