fix: warnings related to chunk_length_s in ifw

[johannaSommer]

Description

This PR addresses warnings by transformers related to the chunk_length_s parameter when using a seq2seq pipeline. Since we are aware that the ifw algorithm is experimental and not exact, we dont have to display these warnings to the user.

Related Issue

None.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Reran tests raising this warning.

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Additional Notes

None.