Close button in search bars of Epiphany & Evince is on the wrong side

## Prerequisites
- [x] I have searched open and closed issues for duplicates.

## Describe the bug
What it says on the tin - the close buttons in search bars of these two gnome apps are on the right, which is not consistent with the rest of those apps (and the rest of the system).

### To Reproduce
Steps to reproduce the behavior:
1. Open Epiphany browser or document in Evince.
2. Press Ctrl+F to start searching
3. The close button of the search bar that appears is on the right side

### Expected behavior
The close button in search bar should be consistently on the left side.

### Screenshots or screen recordings



### Logs

## Platform Information

- OS: elementary OS
- OS Version: Hera
- HW: multiple laptops

- [ ] I'm using the latest version from git that I've manually compiled
- [x] I'm using the latest released stable version

## Additional context