feat: Decorate harvest requests with ht (hasTrace) param

[ptang-nr]

Decorate with ht (hasTrace) query param for all harvest requests except for blobs and logs endpoints. This helps support searching for browser data with associated tracing data.

Overview

In this PR, a ht query param will be added to most outgoing requests when tracing is running to indicate the presence of tracing data.

Related Issue(s)

https://new-relic.atlassian.net/browse/NR-367653

Testing

Added integration test to look for the presence/absence of the ht param
Also manually checked on a test page

[github-actions]

Asset Size Report

Merging this pull request will result in the following asset size changes:

Agent	Asset	Previous Size	New Size	Diff
lite	loader	30.01 kB / 10.89 kB (gzip)	30.03 kB / 10.9 kB (gzip)	0.07% / 0.13% (gzip)
lite	async-chunk	51.3 kB / 16.77 kB (gzip)	51.4 kB / 16.8 kB (gzip)	0.19% / 0.17% (gzip)
pro	loader	52.13 kB / 17.95 kB (gzip)	52.15 kB / 17.96 kB (gzip)	0.04% / 0.04% (gzip)
pro	async-chunk	100.3 kB / 30.63 kB (gzip)	100.4 kB / 30.67 kB (gzip)	0.11% / 0.11% (gzip)
spa	loader	59.75 kB / 20.27 kB (gzip)	59.77 kB / 20.29 kB (gzip)	0.04% / 0.07% (gzip)
spa	async-chunk	115.01 kB / 34.96 kB (gzip)	115.12 kB / 34.99 kB (gzip)	0.09% / 0.08% (gzip)

[github-actions]

Last ran on March 10, 2025 13:03:43 CDT
Checking merge of (ef7e197) into main (2b093e8)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.66%. Comparing base (2b093e8) to head (5a0126d).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1409   +/-   ##
=======================================
  Coverage   88.66%   88.66%           
=======================================
  Files         169      169           
  Lines        7411     7412    +1     
  Branches     1504     1506    +2     
=======================================
+ Hits         6571     6572    +1     
  Misses        733      733           
  Partials      107      107           

Flag	Coverage Δ
unit-tests	79.91% <100.00%> (+<0.01%)	⬆️

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