Minor fix in the Limitless Data import functionality formatting.

[aaravgarg]

No description provided.

[gemini-code-assist]

Code Review

The pull request implements a minor fix in the parse_lifelog_md function within backend/utils/imports/limitless.py. The change introduces a two-pass approach to header processing. The first pass collects all H2 and H3 headers and determines if any H3 headers are present. The second pass then formats the headers: H2 headers are kept as markdown headers if H3s exist, but converted to bullet points if no H3s are found, while H3 headers are always converted to bullet points. This ensures correct conditional formatting of summaries based on the presence of different header levels. The changes appear to correctly address the described formatting requirement, and no high or critical severity issues were identified.