Quote Block display does not respect alignment

[mchowning]

Describe the bug
Changing the alignment within a quote block does not change the text visually, although the alignment attribute does get updated.

To Reproduce
Steps to reproduce the behavior:

1. Create a quote block
2. Change the alignment
3. Observe that the quote block does not visually reflect the alignment

Expected behavior
The quote block should visually reflect alignment

Smartphone (please complete the following information):

• Pixel, Android 10, e502f6c
• iPhone Xr, iOS 13.3.1, e502f6c

Additional context
Comment where @etoledom initially identified the issue

[mchowning]

In order to address this on iOS we just need to pass the align prop to the RichText component as the textAlign prop. It's not currently being passed at all.

We also need the changes from this AztecEditor-Android PR in order for alignment to start working on Android.

[mchowning]

This was addressed in #2006