fix(web): enable miniapp detail scrolling

Author: kev1n77

src/web-ui/src/app/components/GalleryLayout/GalleryDetailModal.presentation.test.ts

@@ -28,6 +28,8 @@ describe('GalleryDetailModal presentation contract', () => {
     expect(styles).toContain('container-name: gallery-detail-modal;');
     expect(styles).not.toContain('width: min(900px, 100%);');
     expect(styles).toContain('height: min(540px, calc(100vh - 48px));');
+    expect(styles).toContain('overflow-y: auto;');
+    expect(styles).toContain('overscroll-behavior: contain;');
     expect(styles).toContain('@container gallery-detail-modal (max-width: 360px)');
     expect(styles).not.toContain('@media (max-width: 720px)');
   });

src/web-ui/src/app/components/GalleryLayout/GalleryDetailModal.scss

@@ -193,7 +193,8 @@
   .gallery-detail-modal__content {
     flex: 1 1 auto;
     min-height: 0;
-    overflow: hidden;
+    overflow-y: auto;
+    overscroll-behavior: contain;
   }
 }