[FIX] Composer disappearing after app store review

[cardoso]

@RocketChat/ios

Awkward solution, but seems to work well.

Closes #2329

[codecov]

Codecov Report

Merging #2380 into develop will decrease coverage by <.01%.
The diff coverage is 0%.

@@             Coverage Diff             @@
##           develop    #2380      +/-   ##
===========================================
- Coverage    26.12%   26.11%   -0.01%     
===========================================
  Files          440      440              
  Lines        16498    16503       +5     
===========================================
  Hits          4310     4310              
- Misses       12188    12193       +5

Impacted Files	Coverage Δ
Rocket.Chat/Views/Cells/Chat/ChatMessageCell.swift	0% <ø> (ø)	⬆️
...Chat/Controllers/Chat/MessagesViewController.swift	41.93% <ø> (ø)	⬆️
...at/MessagesViewControllerMessageCellProtocol.swift	0% <0%> (ø)	⬆️
...Chat/Views/Chat/New Chat/Cells/ReactionsCell.swift	0% <0%> (ø)	⬆️

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