Add IsTracing flag to ctx

[codchen]

Describe your changes and provide context

Add flag to ctx for execution to know whether it's for real processing or for simulation/tracers

Testing performed to validate your change

local sei

[codecov]

Codecov Report

Attention: Patch coverage is 28.57143% with 5 lines in your changes missing coverage. Please review.

Project coverage is 54.56%. Comparing base (3d77518) to head (28bdcb4).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
types/context.go	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #576      +/-   ##
==========================================
- Coverage   54.57%   54.56%   -0.01%     
==========================================
  Files         632      632              
  Lines       55272    55277       +5     
==========================================
- Hits        30163    30162       -1     
- Misses      22950    22956       +6     
  Partials     2159     2159              

Files with missing lines	Coverage Δ
x/upgrade/keeper/keeper.go	83.52% <100.00%> (ø)
types/context.go	52.34% <0.00%> (-1.05%)	⬇️

... and 1 file with indirect coverage changes

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