Opacity not applied to generated React components

## Description:

When I change the background **opacity** in the editor, the generated React component preview does not reflect this change.

## Preview

Opacity of 50 dosent applied on component.

## Reproduce:

Draw a shape in the editor.

Reduce its background opacity.

Check the generated React component on the right side.

## Expected behavior:

The generated React component should apply and display the changed opacity.

Start by reproducing the issue through the editor's background-opacity control and the generated React component preview. Confirm that reducing a shape's opacity is reflected in the preview, using the listed reproduction steps and expected behavior as the acceptance check.

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