refactor: change the frame tab to show current state in browser-ui

[wodeni]

Description

Related issue/PR: #808

#808 disabled history frames in @penrose/browser-ui for performance reasons. However, it's still useful to see the current State data for debugging. This PR replaced the existing frame selection logic with just the current state and renamed the frame tab to be state in the UI.

Checklist

• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new ESLint warnings

[cloudflare-pages]

Deploying with    Cloudflare Pages

Latest commit:	8464659
Status:	✅  Deploy successful!
Preview URL:	https://4faf6e68.penrose-panes.pages.dev

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[codecov]

Codecov Report

Merging #835 (8464659) into main (a0249f2) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #835   +/-   ##
=======================================
  Coverage   68.05%   68.05%           
=======================================
  Files          61       61           
  Lines        7717     7717           
  Branches     1452     1452           
=======================================
  Hits         5252     5252           
  Misses       2452     2452           
  Partials       13       13           

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