Filtering secured field with mode-insensitive

Hi, thanks for your effort to provide useful library, i like it.
I can see that filtering is not supporting for contains, startWith, endWith.
But is there anyway to make it working for mode-insensitive?

I am using equals with insensitive mode, but it is also not working, so i'd love to hear your suggestion for it.

Regard

Look at the library's filtering logic, likely in the middleware or query transformation layer. Check how equals with insensitive mode is currently handled and why it fails. Review existing tests for filtering to understand the expected behavior and extension points.

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