Fix report skipped status

[6543]

i first suspected my logic change as initially used the calcled as signal for skiped steps.
but i just forgot to move the struct change alongside grpc stuff ...

... now tested locally multible times to not mess up again

regression of #6295

[codecov]

Codecov Report

❌ Patch coverage is 54.16667% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 33.08%. Comparing base (6d60849) to head (4fd8525).
⚠️ Report is 19 commits behind head on main.

Files with missing lines	Patch %	Lines
rpc/proto/woodpecker.pb.go	0.00%	5 Missing ⚠️
server/pipeline/step_status.go	76.47%	3 Missing and 1 partial ⚠️
agent/rpc/client_grpc.go	0.00%	1 Missing ⚠️
server/rpc/server.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6300      +/-   ##
==========================================
+ Coverage   32.43%   33.08%   +0.64%     
==========================================
  Files         420      420              
  Lines       28320    28341      +21     
==========================================
+ Hits         9185     9376     +191     
+ Misses      18286    18103     -183     
- Partials      849      862      +13     

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[6543]

thx!