fix(xcontext): api_method should be a Field

[mahmednabil109]

make "api_method" a field in order not to miss the metric counters

[mimir-d]

i'll add some missing context here. This metric tag is temporarily disabled until a future rewrite of the whole metrics/tracing system. It's currently splitting the running_jobs metric in multiple pieces, hence the disable.

[mahmednabil109]

resolved by this issue
docker-library/mysql#881 (comment)

[codecov-commenter]

Codecov Report

Merging #95 (7c09970) into main (a37c87a) will decrease coverage by 0.05%.
The diff coverage is 80.00%.

❗ Current head 7c09970 differs from pull request most recent head 050d744. Consider uploading reports for the commit 050d744 to get more accurate results

@@            Coverage Diff             @@
##             main      #95      +/-   ##
==========================================
- Coverage   67.07%   67.01%   -0.06%     
==========================================
  Files         157      157              
  Lines        9642     9642              
==========================================
- Hits         6467     6462       -5     
- Misses       2496     2498       +2     
- Partials      679      682       +3     

Flag	Coverage Δ
e2e	52.05% <60.00%> (-0.09%)	⬇️
integration	58.75% <80.00%> (+0.02%)	⬆️
unittests	48.94% <20.00%> (-0.04%)	⬇️

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Impacted Files	Coverage Δ
pkg/api/api.go	71.03% <80.00%> (ø)
pkg/remote/sync.go	94.11% <0.00%> (-5.89%)	⬇️
pkg/runner/step_runner.go	87.40% <0.00%> (-0.77%)	⬇️
pkg/xcontext/context.go	66.82% <0.00%> (-0.49%)	⬇️

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