fix(SW-96): use function declarations

components/Lightbox/Gallery.tsx

@@ -31,12 +31,12 @@ export default function Gallery({
     return thumbs
   }
 
-  const handleNext = () => {
+  function handleNext() {
     const nextIndex = (mainImageIndex + 1) % images.length
     onSelectImage(images[nextIndex])
   }
 
-  const handlePrev = () => {
+  function handlePrev() {
     const prevIndex = (mainImageIndex - 1 + images.length) % images.length
     onSelectImage(images[prevIndex])
   }

components/Lightbox/index.tsx

@@ -15,7 +15,7 @@ export default function Lightbox({ images, children }: LightboxProps) {
   const [selectedImageIndex, setSelectedImageIndex] = useState(0)
   const [isFullView, setIsFullView] = useState(false)
 
-  const handleOpenChange = (open: boolean) => {
+  function handleOpenChange(open: boolean) {
     if (!open) {
       setTimeout(() => {
         setIsOpen(false)
@@ -27,11 +27,11 @@ export default function Lightbox({ images, children }: LightboxProps) {
     }
   }
 
-  const handleNext = () => {
+  function handleNext() {
     setSelectedImageIndex((prevIndex) => (prevIndex + 1) % images.length)
   }
 
-  const handlePrev = () => {
+  function handlePrev() {
     setSelectedImageIndex(
       (prevIndex) => (prevIndex - 1 + images.length) % images.length
     )