gh-36991: Fixed doc_test in `database.findstat` by adding new collection
This pull request addresses the doctest failures reported when testing
the `findstat` module. The failures are related to the addition of a new
collection, causing discrepancies in the expected and actual results.
The doctest failures were observed with the following optional packages:
```
--optional=4ti2,antic,build,cbc,ccache,cryptominisat,debian,dot2tex,e_an
tic,external,fricas,glucose,kissat,latte_int,lidia,normaliz,pip,sage,sag
e_numerical_backends_coin,sage_spkg
```
I have updated the doctests to include the new collection in the
expected results.
Fixes #36481
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URL: https://github.com/sagemath/sage/pull/36991
Reported by: Aman Moon
Reviewer(s): Martin Rubey
