⚗️ [RUMF-1351] add error when reaching max events size queued for upload

[bcaudan]

Motivation

When reaching the queued payload size limit while transport is up, it means that the SDK generates too much or too big events that it manages to send given our current thresholds:

• limit the number of concurrent requests to the intake -> max 32 by product
• limit the total ongoing bytes of requests to the intake -> max 80kb by product
• limit the size of queued requests due to throttling or failure -> max 3Mb by product

Changes

Similar to event rate limiter error, report an error to customer when reaching max events size queued for upload.

Testing

• Local
• Staging
• Unit
• End to end

---

I have gone over the contributing documentation.

[codecov-commenter]

Codecov Report

Merging #1716 (700530d) into main (0a86332) will decrease coverage by 0.03%.
The diff coverage is 75.00%.

@@            Coverage Diff             @@
##             main    #1716      +/-   ##
==========================================
- Coverage   90.96%   90.93%   -0.04%     
==========================================
  Files         129      128       -1     
  Lines        4914     4918       +4     
  Branches     1091     1091              
==========================================
+ Hits         4470     4472       +2     
- Misses        444      446       +2     

Impacted Files	Coverage Δ
...ckages/core/src/transport/startBatchWithReplica.ts	81.81% <ø> (ø)
packages/rum-core/src/transport/startRumBatch.ts	0.00% <0.00%> (ø)
packages/rum-core/src/boot/startRum.ts	25.64% <25.00%> (-1.39%)	⬇️
packages/core/src/transport/httpRequest.ts	93.61% <50.00%> (ø)
packages/rum/src/boot/startRecording.ts	95.45% <80.00%> (-4.55%)	⬇️
packages/logs/src/boot/startLogs.ts	84.84% <83.33%> (-2.25%)	⬇️
...ckages/core/src/transport/sendWithRetryStrategy.ts	100.00% <100.00%> (+1.16%)	⬆️
packages/logs/src/domain/assembly.ts	100.00% <100.00%> (ø)
packages/logs/src/transport/startLogsBatch.ts	100.00% <100.00%> (ø)
packages/rum-core/src/domain/assembly.ts	100.00% <100.00%> (ø)
... and 1 more

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