fix: Don't allow gallery to scroll horizontally (#2428)

- Closes: #2424

src/scss/folder-gallery.scss

@@ -1,2 +0,0 @@
-@use 'basic-block.scss';
-@use 'media-gallery.scss';

src/scss/gallery-core.scss

@@ -2,7 +2,10 @@
   width: 100%;
   height: 100%;
   display: block;
-  overflow: auto;
+
+  // See: https://github.com/dermotduffy/advanced-camera-card/issues/2424
+  overflow-x: clip;
+  overflow-y: auto;
 
   // Hide scrollbar: IE and Edge
   -ms-overflow-style: none;