docs: DX and performance improvements in API reference (#9430)

- Improve scroll behavior between active sections
- Improve lag when clicking on a sidebar item
- Refactor internal working of the `SidebarProvider` to find active items faster.
- Use Next.js's `useRouter` hook for changing the hash (since they added the option to disable scroll)
- Change `isBrowser` from a hook to a provider since it's widely used across applications.
- Other general improvements and fixes.

Closes DOCS-952

www/yarn.lock

@@ -6304,17 +6304,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"caniuse-lite@npm:^1.0.30001464, caniuse-lite@npm:^1.0.30001578, caniuse-lite@npm:^1.0.30001587":
-  version: 1.0.30001589
-  resolution: "caniuse-lite@npm:1.0.30001589"
-  checksum: 20debfb949413f603011bc7dacaf050010778bc4f8632c86fafd1bd0c43180c95ae7c31f6c82348f6309e5e221934e327c3607a216e3f09640284acf78cd6d4d
-  languageName: node
-  linkType: hard
-
-"caniuse-lite@npm:^1.0.30001579":
-  version: 1.0.30001597
-  resolution: "caniuse-lite@npm:1.0.30001597"
-  checksum: 32dc315ffafacc8167286c95b05f41b3ce2818314ea913ffed6ceb7b58c64c38365ec250114d1ecceac34f1c77e5af089479e54b160c4a89b88fd25a98851b78
+"caniuse-lite@npm:^1.0.30001464, caniuse-lite@npm:^1.0.30001578, caniuse-lite@npm:^1.0.30001579, caniuse-lite@npm:^1.0.30001587":
+  version: 1.0.30001666
+  resolution: "caniuse-lite@npm:1.0.30001666"
+  checksum: 2d49e9be676233c24717f12aad3d01b3e5f902b457fe1deefaa8d82e64786788a8f79381ae437c61b50e15c9aea8aeb59871b1d54cb4c28b9190d53d292e2339
   languageName: node
   linkType: hard