No longer test st.runs in test_extract_latest_comment_lone_hits

[dachengx]

What does the code in this PR do / what does it improve?

Fix straxen test according to strax's PR: AxFoundation/strax#727

Can you briefly describe how it works?

In AxFoundation/strax#727, after running st.scan_runs, there the returned dataframe dsets contains additional available (besides default and always stored peak_basics and raw_records). But st.runs are not updated following the returned dataframe dsets, for faster performance.

So in the test test_extract_latest_comment_lone_hits, we should refer to dsets but not st.runs, to see if available really works.

Can you give a minimal working example (or illustrate with a figure)?

Please include the following if applicable:

• Update the docstring(s)
• Update the documentation
• Tests to check the (new) code is working as desired.
• Does it solve one of the open issues on github?

Notes on testing

• Until the automated tests pass, please mark the PR as a draft.
• On the XENONnT fork we test with database access, on private forks there is no database access for security considerations.

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