Correctly init workflow metadata for cli exec

[6543]

fix regression of #4103

[6543]

that silli bug got in likely in between seperating stuff to seperate pulls and resolving merge conflicts ...

[woodpecker-bot]

Deploying preview to https://woodpecker-ci-woodpecker-pr-4211.surge.sh

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 26.47%. Comparing base (ddd55ee) to head (23ef12b).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
cli/exec/exec.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4211   +/-   ##
=======================================
  Coverage   26.47%   26.47%           
=======================================
  Files         376      376           
  Lines       27465    27465           
=======================================
  Hits         7270     7270           
  Misses      19530    19530           
  Partials      665      665           

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