459 bug show allowed deviation fields for cl validation

[AnnaPolensky]

Description

Fixes #459 (same issue as #455).
Also, adds the missing connections in the cl_monomer workflow (#454 )
As soon as you have uploaded some crosslinking data the fields for entering manual bounds are displayed.

Testing

Create a cl_monomer workflow. Check that the connections look like this:

Upload some cl data and check that you can enter an upper and lower bound for the accepted validation as soon as you switch to the validation step.

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_analysis.py
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