fix: User frustrations logic should be gated

[ptang-nr]

Move user frustrations logic to browser scope only with FF gate in Generic Events instrumentation. This should avoid running extraneous wrapping logic and events related to user frustrations.

Overview

Avoid running extraneous logic if user_frustrations FF is not enabled.

Related Issue(s)

NR-443293

Testing

Adjusted the component test to include the FF (it caught the logic stopped running w/o the FF).

[github-actions]

Supportability Metric Usage Changes:

No matching changes found

Supportability Metrics .md File Changes:

supportability_metrics.md was changed? false

New supportability metrics require changes to supportability_metrics.md, as well as a new PR to Angler. Please ensure an Angler PR is created and linked to this PR.

[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	25.96 kB / 9.8 kB (gzip)	25.96 kB / 9.8 kB (gzip)	0% / 0% (gzip)
lite	async-chunk	53.13 kB / 17.72 kB (gzip)	53.13 kB / 17.72 kB (gzip)	0% / 0% (gzip)
pro	loader	54.4 kB / 19.24 kB (gzip)	54.48 kB / 19.27 kB (gzip)	0.14% / 0.16% (gzip)
pro	async-chunk	91.8 kB / 28.82 kB (gzip)	91.8 kB / 28.82 kB (gzip)	0% / 0% (gzip)
spa	loader	63.2 kB / 21.92 kB (gzip)	63.28 kB / 21.95 kB (gzip)	0.12% / 0.15% (gzip)
spa	async-chunk	117.21 kB / 36.11 kB (gzip)	117.21 kB / 36.11 kB (gzip)	0% / 0% (gzip)

[codecov]

Codecov Report

❌ Patch coverage is 88.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 88.60%. Comparing base (b41de5c) to head (2514314).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/features/generic_events/instrument/index.js	88.00%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1600   +/-   ##
=======================================
  Coverage   88.60%   88.60%           
=======================================
  Files         206      206           
  Lines        7746     7748    +2     
  Branches     1584     1586    +2     
=======================================
+ Hits         6863     6865    +2     
  Misses        772      772           
  Partials      111      111           

Flag	Coverage Δ
unit-tests	81.87% <88.00%> (+<0.01%)	⬆️

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[github-actions]

Last ran on October 24, 2025 12:02:28 CDT
Checking merge of (2514314) into main (b41de5c)

[ptang-nr]

One of the tests failed in Safari but passes when I test locally

 npm run wdio -- -r false -T tests/specs/ajax/distributed-tracing.e2e.js -b safari@latest

> @newrelic/browser-agent@1.301.0 wdio
> node --max-old-space-size=8192 tools/wdio/bin/cli.js -r false -T tests/specs/ajax/distributed-tracing.e2e.js -b safari@latest


Execution of 1 workers started at 2025-10-24T17:04:45.679Z

Current version of Node Tunnel:  4.0.9
Verifying credentials
Auth succeeded
Checking for updates
Binary already at latest version
Starting tunnel
Tunnel successfully initiated. You can start testing now
[0-0] RUNNING in Safari - file:///tools/wdio/plugins/mocha-globals/globals.mjs, file:///tests/specs/ajax/distributed-tracing.e2e.js
[0-0] 2025-10-24T17:05:07.820Z INFO test-logger: Executing in: Safari macOS Sequoia
...