preserveSpace property in OrganizationChart always preserves space in PrimeNG v19

[maxlatkin]

Description:
I have encountered an issue with the organizationChart component in the latest version of PrimeNG (v19). The preserveSpace property, which is described as: "Whether the space allocated by a node is preserved when hidden," does not behave as expected.

Steps to Reproduce:

1. Use the organizationChart component in a project with PrimeNG v19.
2. Add nodes to the chart and set the preserveSpace property to false.
3. Hide one of the nodes.

Expected Behavior:
When preserveSpace is set to false, the space allocated by a hidden node should collapse, and the layout should adjust to remove the extra space.

Actual Behavior:
The space allocated by the hidden node is always preserved, even when preserveSpace is explicitly set to false.

Environment:

• PrimeNG Version: 19.0.0
• Angular Version: 19.0.5
• Browser: Chrome 130

Additional Notes:
This behavior seems like a bug or regression, as it directly contradicts the expected functionality of the preserveSpace property. Please let me know if further clarification or additional examples are needed to address this issue.