✅ [RUM-6813] Use promise in collectAsyncCalls instead of a callback

[amortemousque]

Motivation

Use promise in collectAsyncCalls instead of a callback.
This will also benefit for the replay lazy loading tests: PR

Changes

• Use promise in collectAsyncCalls instead of a callback.
• Use the async await syntax in the corresponding tests.

Testing

• Local
• Staging
• Unit
• End to end

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I have gone over the contributing documentation.

[cit-pr-commenter]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	152.01 KiB	152.01 KiB	0 B	0.00%	✅
Logs	50.80 KiB	50.80 KiB	0 B	0.00%	✅
Rum Slim	102.21 KiB	102.21 KiB	0 B	0.00%	✅
Worker	25.16 KiB	25.16 KiB	0 B	0.00%	✅

🚀 CPU Performance

Action Name	Base Average Cpu Time (ms)	Local Average Cpu Time (ms)	𝚫
addglobalcontext	0.001	0.001	0.000
addaction	0.031	0.030	-0.001
addtiming	0.001	0.001	-0.000
adderror	0.032	0.029	-0.003
startstopsessionreplayrecording	0.669	0.696	0.027
startview	0.852	0.835	-0.017
logmessage	0.019	0.018	-0.001

🧠 Memory Performance

Action Name	Base Consumption Memory (bytes)	Local Consumption Memory (bytes)	𝚫 (bytes)
addglobalcontext	8.54 KiB	9.26 KiB	742 B
addaction	40.80 KiB	41.31 KiB	523 B
addtiming	7.76 KiB	6.44 KiB	-1359 B
adderror	45.58 KiB	42.11 KiB	-3551 B
startstopsessionreplayrecording	6.31 KiB	4.34 KiB	-2024 B
startview	405.49 KiB	404.21 KiB	-1309 B
logmessage	40.40 KiB	40.99 KiB	614 B

🔗 RealWorld

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 58.82353% with 7 lines in your changes missing coverage. Please review.

Project coverage is 93.58%. Comparing base (ff85ce8) to head (7d530e9).
Report is 12 commits behind head on v6.

Files with missing lines	Patch %	Lines
packages/core/test/collectAsyncCalls.ts	58.82%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##               v6    #3168      +/-   ##
==========================================
- Coverage   93.61%   93.58%   -0.04%     
==========================================
  Files         279      279              
  Lines        7474     7478       +4     
  Branches     1691     1691              
==========================================
+ Hits         6997     6998       +1     
- Misses        477      480       +3     

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