fix: Obtain FirstInteraction directly from performance API

[metal-messiah]

To alleviate the potential performance impact of creating new performance observers to support legacy FirstInteraction timings, a change has been made to query the performance API directly for the presence of first-input data without the use of an observer at logical checkpoints.

Overview

Related Issue(s)

https://new-relic.atlassian.net/browse/NR-365650

Testing

New tests and test fixes for e2e and unit

[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)	30.01 kB / 10.89 kB (gzip)	0% / 0.01% (gzip)
lite	async-chunk	51.3 kB / 16.77 kB (gzip)	52.03 kB / 16.99 kB (gzip)	1.41% / 1.31% (gzip)
pro	loader	52.13 kB / 17.95 kB (gzip)	52.13 kB / 17.95 kB (gzip)	0% / -0.01% (gzip)
pro	async-chunk	100.3 kB / 30.63 kB (gzip)	100.58 kB / 30.7 kB (gzip)	0.28% / 0.23% (gzip)
spa	loader	59.75 kB / 20.27 kB (gzip)	59.75 kB / 20.27 kB (gzip)	0% / 0% (gzip)
spa	async-chunk	115.01 kB / 34.96 kB (gzip)	115.3 kB / 35.05 kB (gzip)	0.25% / 0.25% (gzip)

[github-actions]

Last ran on March 11, 2025 09:30:15 CDT
Checking merge of (4b4ab95) into main (2b093e8)

[codecov]

Codecov Report

Attention: Patch coverage is 93.02326% with 3 lines in your changes missing coverage. Please review.

Project coverage is 88.70%. Comparing base (2b093e8) to head (6e41564).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
src/common/util/event-origin.js	90.00%	1 Missing and 1 partial ⚠️
.../features/session_trace/aggregate/trace/storage.js	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1410      +/-   ##
==========================================
+ Coverage   88.66%   88.70%   +0.04%     
==========================================
  Files         169      170       +1     
  Lines        7411     7413       +2     
  Branches     1504     1505       +1     
==========================================
+ Hits         6571     6576       +5     
+ Misses        733      728       -5     
- Partials      107      109       +2     

Flag	Coverage Δ
unit-tests	79.99% <82.35%> (+0.08%)	⬆️

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