fix enrichr organism names

[jorisfu]

Description

fixes #468
Fixes the organism names for upstream enrichr

Changes

Lowercase 👍

Testing

Use any protein_df that comes from a t_test where we have a log2_foldchange column (e.g. significant_proteins_df). Perform a Gene Mapping step using the integrated uniprot DB on that df and connect the output and the protein df to GO Analysis (Enrichr API). Set the column to log2_fold_change and the threshold to 0, then check with different organisms and see that the enrichment does not crash because the organism id is invalid.

PR checklist

Development

• If necessary, I have updated the documentation (README, docstrings, etc.)
• If necessary, I have created / updated tests.

Mergeability

• main-branch has been merged into local branch to resolve conflicts
• The tests and linter have passed AFTER local merge
• The backend code has been formatted with black
• The frontend code has been formatted with pnpm format and checked with pnpm lint

Code review

• I have self-reviewed my code.
• At least one other developer reviewed and approved the changes

[github-actions]

Coverage report

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File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
backend/protzilla/methods
data_integration.py					300-311
Project Total

This report was generated by python-coverage-comment-action

[Elena-kal]

The code looks fine, when I followed your testing instructions though I got the following error:
Proteins must be a dataframe with Protein ID and direction of expression change column (e.g. log2FC)

Update: Nvm, works well.