Add zoom to Gallery View in React search results

[goddesswarship]

Expected behavior
Users can zoom in on images from the Gallery View tab of Encounter Search results (/react/encounter-search) using the zoom icons on the image, just like they can on the encounter page (/react/encounter) when clicking on an image.

Current behavior

QA notes

1. Submit an Encounter Search (/react/encounter-search) (doesn't matter which filters you apply)
2. Click on Gallery View tab
3. Click on any image to expand
4. Note that zoom in/zoom out icons are missing from the action icons at the top of the image

5. Click on the encounter link in the right nav of the image
6. Click on the encounter image
7. See the zoom in and zoom out icons are present in the list of action icons

Community link
https://community.wildme.org/t/zoom-in-picture-in-gallery-view-of-individual/5587