[docs] change to use Clarabel in more tutorials

[odow]

This discourse post (https://discourse.julialang.org/t/jump-scs-tutorial-example-fails-on-simple-data/125857/3) points out that SCS is not very robust, and indeed, in many places we need to tweak the tolerances to get things to work. We already have Clarabel in docs, so let's use that instead.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.58%. Comparing base (f70d138) to head (cae8abe).
Report is 1 commits behind head on master.

Additional details and impacted files

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##           master    #3944   +/-   ##
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  Coverage   99.58%   99.58%           
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  Files          43       43           
  Lines        6066     6066           
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  Hits         6041     6041           
  Misses         25       25           

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