Prevent rich text pastes from including formatting ini WordPress Gutenberg

gutenberg.js

wp.domReady(() => {
    function pasteAsPlainText(e) {
        if (!e.clipboardData) return;
        e.stopPropagation();
        e.preventDefault();
        const text = e.clipboardData.getData('text/plain');
        // Insert plain text at the caret
        document.execCommand('insertText', false, text);
    }

    // capture paste events inside the editor
    document.addEventListener('paste', pasteAsPlainText, true);
});

// Try "__unstablePastePlainText={true}" in the RichText component