refactor: Livechat functions to Typescript

[KevLehman]

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Also included: smol refactors to reduce db calls & missing types

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Latest commit: ac7e68c

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[codecov]

Codecov Report

Merging #30631 (ac7e68c) into develop (169da3a) will decrease coverage by 0.26%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop   #30631      +/-   ##
===========================================
- Coverage    51.29%   51.04%   -0.26%     
===========================================
  Files          811      805       -6     
  Lines        15059    15074      +15     
  Branches      2751     2785      +34     
===========================================
- Hits          7725     7694      -31     
- Misses        6926     6946      +20     
- Partials       408      434      +26     

Flag	Coverage Δ
e2e	48.33% <ø> (-0.24%)	⬇️
unit	64.80% <ø> (ø)

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