fill() silently no-ops inside sandbox="allow-scripts" iframes on some
Playwright/Chromium combos because the null origin blocks the
set-value protocol message. The input.value stays empty, so the
host-side evaluateExpression handler rejects it with "Unsupported
characters" and the test never sees a console log.
pressSequentially sends individual key events that always reach the
input regardless of sandbox restrictions.
Jordan Ritter
6e6878349a