Run button is not present if Preview component is not set.

Given the following sandpackConfig

const sandpackConfig = {
  defaultPreset: "default",
  presets: [
    {
      name: "default",
      meta: "live",
      label: "TypeScript",
      sandpackTemplate: "vanilla-ts",
      sandpackTheme: "light",
      snippetFileName: "/index.ts",
      snippetLanguage: "ts",
      initialSnippetContent: [
        'import "./styles.css";',
        'document.getElementById("app").innerHTML = `<h1>Hello world</h1>`;',
      ].join("\n"),
    },
  ],
  panes: {
    console: true,
    preview: false,
  },
};

I guess the need for the solution where we pass down the Sandpack Panels as components instead of just flags is surfacing, as this setting is something we'd have to change on the SandpackCodeEditor by adding showRunButton prop.

Start at the SandpackCodeEditor handling of the sandpackConfig.panes.preview setting and the Run button. Reproduce the configuration shown with preview disabled, then make the intended Run control available without a Preview component and verify the behavior in the relevant editor tests or example.