Treat empty _in arrays as false, ie.

[u12206050]

Don't throw error if filter contains empty array on _in and _nin operators. Simply treat them as arrays that don't contain any values ie. false.

[Copilot]

Pull Request Overview

This PR modifies the filter parsing logic to treat empty arrays in _in and _nin operators as valid values rather than throwing an exception. The change allows empty arrays to function as intended: _in with an empty array matches no items (always false), and _nin with an empty array matches all items (always true).

• Removes the exception thrown when arrays are empty for _in and _nin operators
• Updates tests to verify the new behavior instead of expecting exceptions
• Adds comprehensive test coverage for both empty _in and _nin scenarios

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
src/BccCode.Linq/Server/Filter.cs	Modified array validation to allow empty arrays and added null safety check for tuple creation
tests/BccCode.Linq.Tests/FilterTests.cs	Updated test to verify empty arrays are now allowed instead of throwing exceptions
tests/BccCode.Linq.Tests/Server/FilterToLambdaParserTests.cs	Added new tests for _in, empty _in, and empty _nin operator behaviors

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[ice1e0]

@u12206050 Great catch! I think this should be implemented, giving the library more optimistic behavior. @rvanoord pls review