feat(web): expand/collapse sidebar (#16768)

* feat: expand/collapse sidebar

* fix: general PR cleanup

- add skip link unit test
- remove unused tailwind styles
- adjust asset grid spacing
- fix event propogation

* fix: cleaning up event listeners

* fix: purchase modal and button on small screens

* fix: explicit tailwind classes

* fix: no animation on initial page load

* fix: sidebar spacing and reactivity

* chore: reverting changes to icons in nav and account info panel

* fix: remove left margin from the asset grid after merging in new timeline

* chore: extract search-bar changes for a separate PR

* fix: add margin to memories

web/src/lib/components/shared-components/purchasing/purchase-content.svelte

@@ -57,7 +57,7 @@
       </div>
     {/if}
 
-    <div class="flex gap-6 mt-4 justify-between">
+    <div class="flex flex-col sm:flex-row gap-6 mt-4 justify-between">
       <ServerPurchaseOptionCard />
       <UserPurchaseOptionCard />
     </div>