[fix][backend] add platform_type field to ListTrajectoryOApiRequest for AKSK auth

[SharkeyChen]

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Codecov Report

✅ All modified and coverable lines are covered by tests.

@@           Coverage Diff           @@
##             main     #553   +/-   ##
=======================================
  Coverage   77.65%   77.66%           
=======================================
  Files         670      670           
  Lines       76101    76101           
=======================================
+ Hits        59100    59104    +4     
  Misses      13542    13542           
+ Partials     3459     3455    -4     

Flag	Coverage Δ
unittests	77.66% <100.00%> (+<0.01%)	⬆️

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Files with missing lines	Coverage Δ
...ckend/modules/observability/application/openapi.go	84.83% <100.00%> (ø)

... and 3 files with indirect coverage changes

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