CreateClone page: broken layout and deletion protection label wraps
## Problem
On the Create Clone page:
1. **Form layout is broken** — the form column is much narrower than the CLI help column on the right. Should be roughly 50/50 split.
2. **"Deletion protection" label wraps to two lines** — it should always stay on one line.
## Root cause
1. The `.form` flex items lack `min-width: 0`, so the `<pre>`/`<code>` blocks in the CLI snippet section force the right column wider than 50% (flexbox items default to `min-width: auto`).
2. The Deletion Protection `<Select>` uses `style={{ minWidth: 100 }}` instead of `fullWidth`, making the label wrap at narrow widths.
## Fix
Closes with !1134
issue