Empty new lines do not show correctly in messages

(#1548) Bug Fixed markdown mobile

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Comment by Radiant Xyz
Can reproduce Confirmed; the spacing isn't representative of the number of empty lines entered Beta 34, Version 1.0.0, Android 16 (arm64), Device samsung SM-S938B, Locale de-DE, Push fcm, Flutter 3.44.0, Dart 3.12.0