🐛 prevent recording to start when session renewed before onload

[BenoitZugmeyer]

Motivation

When the session is renewed before onload, there may be a case where the recording is incorrectly started.
This shouldn't happen that often, but it bothered me.

Changes

Stop the recording during session renew if it is starting.

Testing

CI

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I have gone over the contributing documentation.

[webNeat]

Looks good to me.

[codecov-commenter]

Codecov Report

Merging #1009 (1423672) into main (4cd9389) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #1009   +/-   ##
=======================================
  Coverage   89.05%   89.05%           
=======================================
  Files          86       86           
  Lines        4119     4119           
  Branches      946      946           
=======================================
  Hits         3668     3668           
  Misses        451      451           

Impacted Files	Coverage Δ
packages/rum/src/boot/recorderApi.ts	100.00% <100.00%> (ø)

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