chore: remove payload logging

[Sidddddarth]

Description

Remove logs that can expose event payloads.

Linear Ticket

Resolves PIPE-1825

Security

• The code changed/added as part of this pull request won't create any security issues with how the software is being used.

[codecov]

Codecov Report

Attention: Patch coverage is 14.28571% with 6 lines in your changes missing coverage. Please review.

Project coverage is 74.79%. Comparing base (134fbc0) to head (82af486).

Files with missing lines	Patch %	Lines
gateway/handle.go	0.00%	4 Missing ⚠️
router/transformer/transformer.go	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5447      +/-   ##
==========================================
+ Coverage   74.76%   74.79%   +0.03%     
==========================================
  Files         440      440              
  Lines       61705    61696       -9     
==========================================
+ Hits        46132    46144      +12     
+ Misses      13022    13009      -13     
+ Partials     2551     2543       -8     

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