🔇 Remove lower batch size experiment

[amortemousque]

Motivation

The lower batch size experiment does not lend expected results. We still got lots of sendBeacon collisions before unload and at visibility change. Lets clear the code related to the experimentation.

Changes

• Removes lower batch size
• Removes failed sendBeacon telemetry

Testing

• Local
• Staging
• Unit
• End to end

---

I have gone over the contributing documentation.

[codecov-commenter]

Codecov Report

Merging #1645 (6607f87) into main (97a51c6) will decrease coverage by 0.00%.
The diff coverage is 87.50%.

@@            Coverage Diff             @@
##             main    #1645      +/-   ##
==========================================
- Coverage   90.86%   90.85%   -0.01%     
==========================================
  Files         129      128       -1     
  Lines        4686     4660      -26     
  Branches     1050     1042       -8     
==========================================
- Hits         4258     4234      -24     
+ Misses        428      426       -2     

Impacted Files	Coverage Δ
...ges/core/src/domain/configuration/configuration.ts	100.00% <ø> (ø)
packages/rum-core/src/boot/startRum.ts	27.02% <ø> (+0.71%)	⬆️
packages/core/src/transport/batch.ts	90.47% <71.42%> (ø)
packages/core/src/transport/httpRequest.ts	100.00% <100.00%> (ø)
packages/rum/src/boot/startRecording.ts	100.00% <100.00%> (+4.54%)	⬆️
...ckages/rum/src/domain/segmentCollection/segment.ts	97.14% <100.00%> (-0.16%)	⬇️
.../src/domain/segmentCollection/segmentCollection.ts	100.00% <100.00%> (ø)
packages/rum/src/transport/send.ts	100.00% <100.00%> (ø)

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