Feature: Hitting back during "keypad" input goes back to previous group of characters

[hojdan]

Let's say I want to enter the letter a as a simple example.

1. I touch the group with a-h
2. I touch the next group that appears which is a-c
3. I then touch a

Let's say I click something wrong by accident at some point.

1. If I touch the next group i-q, touching the back button afterward will take me back to all the letters and then I can touch the correct group. No issue here.
2. If I touch the next group d-e, touching the back button afterward will take me all the way back to all the letters. Then I would need to first touch group a-h from all the letters then I can touch the correct group. I would prefer that touching the back button not take me back all the way but instead to just the previous group selection.
3. I click b by accident and thus b is entered. To correct my mistake I click the back button. No issue here.

[benma]

Makes sense to me. @jadzeidan what do you think?

[jadzeidan]

Yeah, also makes sense to me to go back to previous group. Ack from me.

[crmb]

Just wanted to bump this, would be a great improvement.

[alessandro-opensource]

Hi! As mentioned in the PR I opened: #1689 (comment)

I built it in the container and tested it with the simulator, and it seems to behave as expected.

Would love any feedback!