[Bug]: Incorrect css variables for the Sidebar component

[phederal]

Reproduction

...

Describe the bug

Class w-[--sidebar-width] should be w-(--sidebar-width) and a similar approach should be followed everywhere. This is according to the tailwind v4.1 documentation

System Info

System:
    OS: Windows 11 10.0.22621
    CPU: (16) x64 AMD Ryzen 7 4800H with Radeon Graphics
    Memory: 41.36 GB / 63.37 GB
  Binaries:
    Node: 22.6.0
    bun: 1.3.1
  Browsers:
    Edge: Chromium (140.0.3485.54)
    Firefox: 139.0
    Firefox Developer Edition: 145.0
    Internet Explorer: 11.0.22621.3527

Contributes

• [ ] I am willing to submit a PR to fix this issue
• [ ] I am willing to submit a PR with failing tests