On Android, the soft keyboard keeps viewInsets.bottom non-zero while the
search TextField is focused. ListView.builder is allocated near-zero
height and renders 0 items, so find.text(subject) always finds nothing
even though the IMAP search returned results. Unfocusing the primary
focus after enterText dismisses the keyboard and gives the results list
full body height before pumpUntil starts polling.
Also fix pumpUntil to use pump(300ms) instead of pumpAndSettle() so a
continuously-running animation (spinner under CPU load) never prevents
settling, and override accountConnectionStatusProvider so _AccountTile
never shows a CircularProgressIndicator during the test.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
