Describe the bug
When typing into a right-aligned input, spaces are not shown as they are typed. An example of this is in the Image block settings sheet "Alt Text". Although there are some discussions about changing the design of this field in particular (#922) I think this remains a viable fix for any future right-aligned inputs that are used within sheets.

To Reproduce

1. Open settings sheet for an image in a post
2. Type a character in the "Alt text" input followed by a space
3. Notice that the space is not shown
4. Type another character
5. Notice that the space now shows

Expected behavior
We also use right-aligned inputs in the site creation flow when entering a site title or tagline. We should match the behaviour of these inputs which displays the spaces as you type them.

Screenshots

Tested on iPhone X, iOS 13.3.1, WP 14.3