fix: removed required columns validation for uploaded sample sheet validations

[ignacionistal]

fix: removed required columns validation for uploaded sample sheet validations

Type of Change*

• New feature
• Bug fix
• Documentation update
• Refactoring
• Hotfix
• Security patch
• UI/UX improvement

Description

Removed validation for required columns from sample sheet validation file to allow user to upload custom sample sheet with any structure. We only validate now that samplesheet is not empty, it's a valid csv file and it contains at least a header row.

Testing*

Tested manually on local and development environments.

Impact

Only impacts new feature for uploading custom sample sheet.

Additional Information

This was requested by client who specified that the sample sheets can have any format and columns. Client mentioned that validating it is not empty and a valid csv are the only requirements.

Checklist*

• No new errors or warnings have been introduced.
• All tests pass successfully and new tests added as necessary.
• Documentation has been updated accordingly.
• Code adheres to the coding and style guidelines of the project.
• Code has been commented in particularly hard-to-understand areas.