pass leaves only parameter to recursive function

[Cubewise-JoeCHK]

close #1283

[MariusWirtz]

Good catch. Thank you @Cubewise-JoeCHK

Please add a test case that covers the case described in #1283

[Copilot]

Pull Request Overview

This PR fixes a bug in the hierarchical element traversal where the leaves_only parameter was not being passed through to recursive calls, causing inconsistent behavior when retrieving descendants with leaf-only filtering enabled.

• Fixed the get_descendants method to properly pass the leaves_only parameter in recursive calls
• Added a comprehensive test case to verify the fix works correctly with multi-level hierarchical consolidations

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
TM1py/Objects/Hierarchy.py	Fixed the recursive call to pass the leaves_only parameter
Tests/Hierarchy_test.py	Added test case to verify the fix with complex hierarchical structure

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[github-actions]

Tests completed for environment: tm1-11-cloud. Check artifacts for details.