Rebinding Ctrl-h doesn't work

Description of the problem or steps to reproduce

In my bindings.json I'm setting

    "Ctrl-h": "SelectToEndOfLine,Delete",

to delete the rest of the line (starting from the cursor) when hitting Ctrl-h. Unfortunately, this does not work and micro still deletes the previous character when I hit Ctrl-h. Running cat in my shell shows that my terminal maps Ctrl-h to ^H as expected. However, executing > raw within micro shows that micro still interprets Ctrl-h as a Backspace event:

EventKey: Backspace: "\b"

I also tried hitting the regular Backspace key, which resulted in:

EventKey: Backspace2: "\u007f"

Unfortunately, I'm not able to bind the Backspace2 event to anything or otherwise I would bind Backspace to my desired action for Ctrl-h and Backspace2 to the usual Backspace action.

Am I doing anything wrong? Is this a bug?

Specifications

Commit hash: b9763856
OS: Ubuntu 21.04
Terminal: Alacritty, urxvt

Start with the bindings.json entry for "Ctrl-h" and reproduce the behavior in micro using the raw command mentioned in the report. Compare the reported Backspace and Backspace2 events while testing the binding; done means Ctrl-h runs SelectToEndOfLine,Delete without changing regular Backspace behavior.