[REPLAY] Fix serialization for checkbox & radio

[ThibautGeriz]

Motivation

When serialise checkbox & radio with mask-input-privacy. It would record the input with checked: '***' on all the input regardless or if it was set.

It would be re-created like this in the player

<label>
  <input
    type="radio"
    name="name1"
    value="***"
    checked="***"
  />
  <span>option 1</span>
</label>
<label class="c-radio">
  <input
    type="radio"
    name="name1"
    value="***"
    checked="***"
  />
  <span>option 2</span>
</label>

Meaning all the radio & checkbox would be checked.

Let's uncheck all of them when that's the privacy setting

Changes

Delete the checked attribute instead of the overding it with ***

Testing

• Local
• Staging
• Unit
• End to end

---

I have gone over the contributing documentation.

[codecov-commenter]

Codecov Report

Merging #2021 (157f74f) into main (a483e80) will decrease coverage by 0.11%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #2021      +/-   ##
==========================================
- Coverage   93.59%   93.48%   -0.11%     
==========================================
  Files         145      145              
  Lines        5512     5512              
  Branches     1250     1250              
==========================================
- Hits         5159     5153       -6     
- Misses        353      359       +6     

Impacted Files	Coverage Δ
packages/rum/test/htmlAst.ts	92.00% <ø> (ø)
packages/rum/src/domain/record/serialize.ts	96.29% <100.00%> (ø)
...s/rum-core/src/domain/contexts/pageStateHistory.ts	80.48% <0.00%> (-12.20%)	⬇️
...rum-core/src/domain/contexts/foregroundContexts.ts	96.92% <0.00%> (-1.54%)	⬇️

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[BenoitZugmeyer]

💬 suggestion:

• this test title is a bit misleading as it actually does not serialize the checked state.
• Maybe move it in the describe('input privacy mode mask-user-input' to colocate with similar tests

[BenoitZugmeyer]

🥜 nitpick: ‏the node argument could have the type Element, since we are specifically serializing elements.