Function attachNavButtonHandler

attachNavButtonHandler(
    btn: HTMLElement,
    direction: "next" | "prev",
    nextThemeFn: () => void,
    previousThemeFn: () => void,
): void
Attaches the handler to a secondary navigation button (prev/next).
Parameters
- btn: HTMLElement
  Button DOM
- direction: "next" | "prev"
  "prev" | "next"
- nextThemeFn: () => void
  Function to activate the next theme
- previousThemeFn: () => void
  Function to activate the previous theme
Returns void
- Defined in src/capabilities/theme-selector/theme-selector-secondary.ts:51