🐛 [RUM-6411] RUM should not crash with puppeteer injection

[cy-moi]

Motivation

RUM would crash when injected with puppeteer evaluateOnNewDocument because resizeObserver is observing on non-document targets.

Changes

Add check for observe target
Add e2e test for inject rum with puppeteer

Testing

• Local
• Staging
• Unit
• End to end

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I have gone over the contributing documentation.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.45%. Comparing base (82d898a) to head (9f78ec5).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3153      +/-   ##
==========================================
+ Coverage   93.43%   93.45%   +0.01%     
==========================================
  Files         280      280              
  Lines        7679     7680       +1     
  Branches     1719     1720       +1     
==========================================
+ Hits         7175     7177       +2     
+ Misses        504      503       -1     

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• Flaky Tests Detection - Detect and resolve failed and flaky tests
• JS Bundle Analysis - Avoid shipping oversized bundles

[cit-pr-commenter]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	161.60 KiB	161.60 KiB	3 B	0.00%	✅
Logs	55.85 KiB	55.85 KiB	0 B	0.00%	✅
Rum Slim	110.44 KiB	110.44 KiB	3 B	0.00%	✅
Worker	25.21 KiB	25.21 KiB	0 B	0.00%	✅

🚀 CPU Performance

Action Name	Base Average Cpu Time (ms)	Local Average Cpu Time (ms)	𝚫
addglobalcontext	0.001	0.002	0.001
addaction	0.031	0.060	0.029
addtiming	0.001	0.002	0.001
adderror	0.032	0.040	0.008
startstopsessionreplayrecording	0.809	1.074	0.264
startview	1.020	1.327	0.308
logmessage	0.019	0.023	0.004

🧠 Memory Performance

Action Name	Base Consumption Memory (bytes)	Local Consumption Memory (bytes)	𝚫 (bytes)
addglobalcontext	8.98 KiB	7.59 KiB	-1423 B
addaction	41.07 KiB	39.66 KiB	-1441 B
addtiming	6.30 KiB	6.50 KiB	205 B
adderror	44.70 KiB	44.09 KiB	-622 B
startstopsessionreplayrecording	5.15 KiB	5.70 KiB	564 B
startview	421.72 KiB	426.63 KiB	4.91 KiB
logmessage	40.13 KiB	40.09 KiB	-39 B

🔗 RealWorld

[BenoitZugmeyer]

💬 suggestion: ‏

Suggested change

	if (observerTarget instanceof Element) {
	if (observerTarget) {

[BenoitZugmeyer]

💬 suggestion: ‏Move this function out of this module as it has little to do with the createTest helper. Since it is only one test case, you could even inline the code inside of the test