Unnecessary space below emoji picker

[fluxbug-flutter]

Steps to reproduce

1. Open emoji picker

Expected behaviour

There should be no apparent wasted space

Actual behaviour

There is an unnecessary extra bit of space below the row of communities but above the navigation buttons

Client and system settings

Version 1.0.0, Beta 38, Channel Beta, Build 2199, Android 16 (arm64), Device Google Pixel 9a, Locale en-US, Push fcm, Flutter 3.44.7, Dart 3.12.2

Stances

Approvals

• CR — Version 1.0.0, Beta 38, Channel Beta, Build 42, iOS 18.7.8 (arm64), Device iPhone17,1, Locale en-US, Push apns, Flutter 3.44.7, Dart 3.12.2
• CR - Version 1.0.0, Beta 38, Channel Beta, Build 2200, Android 17 (arm64), Device Google Pixel 9, Locale en-US, Push unifiedpush, Flutter 3.44.7, Dart 3.12.2
• Version 1.0.0, Beta 39, Channel Beta, Build 44, iOS 26.5.2 (arm64), Device iPhone15,4, Locale tr-TR, Push apns, Flutter 3.44.7, Dart 3.12.2

Denials

None

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Reported: #1265