Fix api doc page not scrollable

[lungarella-raffaele]

Fixes part of #1162
This addresses a sidebar state management issue where the scrollbar behavior and sidebar state aren't properly coordinated.

I think the intended behavior should be:

• Desktop/tablet: sidebar always open, page scrollbar visible
• Mobile: sidebar toggles open/closed, scrollbar locked when sidebar is open

However, the current implementation has some issues:

1. On page render, isSidebarOpen flashes from true to false even when the sidebar is clearly visible
2. Clicking the sidebar toggle affects both scrollLock and isSidebarOpen on all screen sizes, even though this behavior should only apply to mobile (I think)
3. The sidebar state issues aren't immediately obvious because CSS media queries independently control sidebar visibility, hiding the underlying state management problems

I've updated the logic so that sidebar state management primarily matters on mobile, with the sidebar defaulting to open on larger screens, but I had to add an hook to check if we are on mobile with an hardcoded breakpoint

This makes the docs more usable, but I'd love feedback on how to improve it! 🙂

[jderochervlk]

I think some of this, or all of this, is fixed by: #1156

@fhammerschmidt mentioned another issue, but I think it's best to try and get that merged in before any other scrolling or layout fixes.

[fhammerschmidt]

Yeah but only if you dont introduce new layout issues check my last comment)

[jderochervlk]

I closed out the other PR, so I think we should go ahead with this fix. @lungarella-raffaele if you pull from master I think we should be able to have a cloudflare preview run so we can test things.

[lungarella-raffaele]

Let me know if I can do something to fix the build :)

[jderochervlk]

Let me know if I can do something to fix the build :)

It's a permission issue on the GitHub action and some missing env variables that aren't accessible by forks. I feel like we should be able to figure it out.