feat: Revamp order mails

[iamareebjamal]

Fixes #7148

[codecov]

Codecov Report

Merging #7413 into development will decrease coverage by 0.03%.
The diff coverage is 45.45%.

@@               Coverage Diff               @@
##           development    #7413      +/-   ##
===============================================
- Coverage        64.74%   64.70%   -0.04%     
===============================================
  Files              262      263       +1     
  Lines            13236    13284      +48     
===============================================
+ Hits              8570     8596      +26     
- Misses            4666     4688      +22     

Impacted Files	Coverage Δ
app/api/helpers/system_mails.py	100.00% <ø> (ø)
app/api/helpers/tasks.py	16.75% <7.69%> (-0.44%)	⬇️
app/models/event.py	76.72% <36.36%> (-2.01%)	⬇️
app/api/helpers/mail.py	41.26% <45.23%> (+3.25%)	⬆️
app/api/helpers/mail_recorder.py	70.00% <70.00%> (ø)
app/instance.py	87.91% <100.00%> (+0.13%)	⬆️

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