Restarted runs on PromethION do not include the Markdown report

[kjsanger]

Runs on the PromethION-24 (MinKNOW 4.5.4) that are restarted do not get the usual Markdown report file created and sometimes do not get the final PDF report either.

We rely on the Markdown report for automated metadata extraction. The final report .txt file seems always to be present and contains most of the same data. However, it does not contain the MinKNOW or Guppy software versions.