fix: Improve reliability of customMasker

[metal-messiah]

The customMasker method of the Session Replay feature has been fixed to be more reliable with DOM elements that do not fit web-standards, as to not throw errors when processing. Initial Replay harvests will now be gated until a valid snapshot is taken.

Overview

This PR has been named the way it has to encapsulate SR bug fix changes that span across this PR and some that were rolled into #1190. It has been named this way to aid with the release notes.

Related Issue(s)

https://new-relic.atlassian.net/browse/NR-314446

Testing

Tests should continue to pass

[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	30.66 kB / 11.09 kB (gzip)	30.66 kB / 11.09 kB (gzip)	0% / 0% (gzip)
lite	async-chunk	51.5 kB / 16.72 kB (gzip)	51.5 kB / 16.72 kB (gzip)	0% / 0% (gzip)
pro	loader	51.3 kB / 17.71 kB (gzip)	51.3 kB / 17.71 kB (gzip)	0% / -0.01% (gzip)
pro	async-chunk	97.95 kB / 29.64 kB (gzip)	97.98 kB / 29.65 kB (gzip)	0.03% / 0.03% (gzip)
spa	loader	58.95 kB / 20.09 kB (gzip)	58.95 kB / 20.09 kB (gzip)	0% / 0% (gzip)
spa	async-chunk	113.01 kB / 34 kB (gzip)	113.04 kB / 34.01 kB (gzip)	0.03% / 0.03% (gzip)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.31%. Comparing base (81349b8) to head (b0bdece).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1197      +/-   ##
==========================================
- Coverage   88.37%   88.31%   -0.07%     
==========================================
  Files         164      164              
  Lines        7228     7231       +3     
  Branches     1478     1478              
==========================================
- Hits         6388     6386       -2     
- Misses        722      726       +4     
- Partials      118      119       +1     

Flag	Coverage Δ
integration-tests	91.61% <100.00%> (-0.16%)	⬇️
unit-tests	78.67% <100.00%> (+<0.01%)	⬆️

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[cwli24]

The release notes description should inform customers the behavioral change this introduces.

[github-actions]

Last ran on September 24, 2024 11:44:12 CDT
Checking merge of (b0bdece) into main (81349b8)