Related to the change with Medusa Internal Service here: https://github.com/medusajs/medusa/pull/12715/files#diff-4d287d33cf799750dfc3957d3c22d87a5d369ca15bbbc7db29265fc864cedfadL248

Context: all of my medusa-service generated update functions are always returning an array, forcing me to have to check the response myself.

ex:

export const updateThemeStep = createStep(
  'update-theme-step',
  async (input: UpdateCheckoutThemeWorkflowStepInput, { container }) => {
    const themeModuleService: ThemeModuleService = container.resolve(CHECKOUT_THEME_MODULE);

    const { channel_id, ...updateThemeData } = input;

    const originalTheme = await queryCheckoutTheme({ container, themeId: input.id });

    const theme = await themeModuleService.updateCheckoutThemes(updateThemeData);

    if (Array.isArray(theme)) return new StepResponse(theme[0], originalTheme);

    return new StepResponse(theme, originalTheme);
  },
  async (originalTheme, { container }) => {
    if (!originalTheme) return;

    const themeModuleService: ThemeModuleService = container.resolve(CHECKOUT_THEME_MODULE);

    await themeModuleService.updateCheckoutThemes(originalTheme);
  }
);