B-26359 Update photo viewer to fill space available by default

[ajlusk]

B-26359

Not directly part of the AC but the photo viewer (just the photo viewer, not the PDF viewer) wasn't taking up the full width available to it, resulting it poor UX with a scroll bar in the middle of the screen. The primary changes for B-26359 created more space for this to fill and this change should allow it to take up all the space available to it by default ideally without affecting the ability to use the existing sizing behavior.

Testing Instructions

If you want to see a before and after rather than just the after, do step 3 first.

1. Update your local to use github:transcom/react-file-viewer#v1.4.6 for it the dependency @transcom/react-file-viewer
2. Clear and reinstall your npm modules with rm -rf node_modules then yarn install, we don't want a frozen lockfile
3. Anywhere in the app upload a handful of image files that you'll be able to review in the document viewer like orders and navigate to viewing them.
4. Verify the center component where the image is displayed fills the space available to it, the vertical scrollbar is flush against the right sidebar, and the horizontal scrollbar is not hidden by the the controls bar at the bottom.