missing catalog image overlay when there is only one source in the catalog file

[kswang1029]

Describe the bug
It appears that if a catalog file has only one source, if we have two images matched and enable the catalog image overlay, we will only see one image has the catalog overlay. The other is empty. If we load a catalog with two sources instead and repeat the exercise, we will see two sources on both images as expected.

To Reproduce
Steps to reproduce the behavior:

1. download the test images and test catalog files
   https://drive.google.com/file/d/164C3NjSyE30T2BHXi7Y9FaTFm7AzfDc7/view?usp=sharing

2. load the two images and match them

3. load catalog.vot which contains only one source and enable catalog overlay. We will see the issue.

4. repeat the test with catalog2.vot which contains two sources. We will see the expected behavior.

Expected behavior
with the single source catalog file, we should see the catalog overlay on all matched images.

Platform info (please complete the following information):

• OS [e.g. macOS Monterey]: macOS Monterey
• Browser [e.g. chrome, safari, electron app]: electron app
• Browser version [e.g. 22]:
• Backend branch [e.g. dev, v3b2 release]: v3-stable
• Frontend branch [e.g. dev, v3b2 release]: v3-stable