Spacer Block Height Customization Not Applied in Gutenberg Editor

Problem/Motivation

When adding a Spacer block in the Gutenberg editor and attempting to customize the height using the control in the sidebar, the height setting is not applied, resulting in the spacer block not rendering with the expected height.

Steps to reproduce

1. Open a page or post in the Drupal 10 Gutenberg editor.
2. Add a "Spacer" block.
3. In the block settings sidebar, adjust the height using the available control.

Proposed resolution

The height adjustment made via the sidebar control should be applied to the Spacer block, and the block should render with the custom height.