Feature Request: Fully clear input on Control-C

[ethus3h]

A frequent issue I run into is that after typing something and hitting Control-R to search for completions, Control-C doesn't give me a new prompt, but just closes Atuin. This consistently trips me up because it's not consistent with Bash without Atuin, so my muscle memory never gets it right when I'm working on a system with Atuin installed. Could there be an option (or change) to automatically clear it, the same as Bash does by default?

Thanks for considering!

Possibly related to #193.

Steps to reproduce:

• Type smoe command name
• Hit control-R to search for it in Atuin
• Realize I typoed it, hit control-C to clear the prompt
• Type some command name, getting it right this time, press control-R again
• Atuin searches for smoe command namesome command name because it never cleared what I typed the first time
• Press control-C twice, then type my search and press control-R a third time to successfully search for it

Atuin doctor output:

{
  "atuin": {
    "version": "18.3.0",
    "sync": null,
    "sqlite_version": "3.44.0"
  },
  "shell": {
    "name": "bash",
    "default": "bash",
    "plugins": [
      "atuin",
      "bash-preexec"
    ],
    "preexec": "bash-preexec"
  },
  "system": {
    "os": "Debian GNU/Linux",
    "redacted": ""
  }
}