gh-37462: Add Temperley-Lieb algebras to the category of cellular alg…

…ebras

    
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Temperley-Lieb algebras are known to be cellular algebras with their
natural basis being a cell basis (given by splitting the diagram is
half). We let the Sage implementation know about this.

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- #37393 This also requires fixes to the ascii/unicode art for the
indexed basis elements in order for them to display properly in the
cases here.

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URL: #37462
Reported by: Travis Scrimshaw
Reviewer(s): Matthias Köppe