Add missing context to watermill messages.

[gfyrag]

No description provided.

[codecov]

Codecov Report

Merging #173 (4b0b4de) into main (b2a6ff4) will increase coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head 4b0b4de differs from pull request most recent head 384427c. Consider uploading reports for the commit 384427c to get more accurate results

@@            Coverage Diff             @@
##             main     #173      +/-   ##
==========================================
+ Coverage   74.36%   74.37%   +0.01%     
==========================================
  Files          86       86              
  Lines        3343     3345       +2     
==========================================
+ Hits         2486     2488       +2     
  Misses        679      679              
  Partials      178      178              

Impacted Files	Coverage Δ
pkg/bus/message.go	71.42% <100.00%> (+11.42%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 2ff97e1...384427c. Read the comment docs.