fix: Resample button in panes

[samestep]

Description

#864 changed the semantics of resample so now it only resets the diagram using its current seeds instead of resampling with new seeds. The same PR updated browser-ui so that the "resample" button in the UI also generates new seeds before calling resample, but did not update panes to do the same. This PR fixes that bug.

Examples with steps to reproduce them

Open any diagram in panes, click the resample button and see whether it changes.

Checklist

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

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Latest commit:	8947eb4
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Preview URL:	https://d454527e.penrose-panes.pages.dev

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[codecov]

Codecov Report

Merging #881 (8947eb4) into main (033a259) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #881   +/-   ##
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  Coverage   67.51%   67.51%           
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  Files          62       62           
  Lines        8206     8206           
  Branches     1774     1774           
=======================================
  Hits         5540     5540           
  Misses       2659     2659           
  Partials        7        7           

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