feat: print summary and run post commands when (q)uit is used

[GideonBear]

What does this PR do

• Still print summary when (q)uit is used
• Make sure the report is still added for a step when (q)uit is used
• Remove unused interrupted argument

Standards checklist

• The PR title is descriptive
• I have read CONTRIBUTING.md
• Optional: I have tested the code myself
• If this PR introduces new user-facing messages they are translated

[GideonBear]

This also fixes there not being a newline after pressing q:

Retry? (y)es/(N)o/(s)hell/(q)uit[gideon@gideon-pc-lin ~/projects/topgrade] (main =) 1 (4.321s)

[GideonBear]

This does not solve the issue where pressing Ctrl+C on the prompt continues execution normally:

Retry? (y)es/(N)o/(s)hell/(q)uitERROR Error reading from terminal: read interrupted


── 10:02:29 - uv ───────────────────────────────────────────────────────────────

But that was already there, this behavior is unchanged.