⚗️ [RUM-257] Collect INP

[amortemousque]

Motivation

Interaction to Next Paint (INP) is a Core Web Vital metric that will replace First Input Delay (FID) in March 2024. INP assesses a page's overall responsiveness to user interactions by observing the latency of all clicks, taps, and keyboard interactions that occur throughout the lifespan of a user's visit to a page

Changes

Collect INP under view.interaction_to_next_paint

Testing

• Local
• Staging
• Unit
• End to end

---

I have gone over the contributing documentation.

[codecov-commenter]

Codecov Report

Merging #2355 (c84c2f9) into main (084db3d) will decrease coverage by 0.09%.
Report is 1 commits behind head on main.
The diff coverage is 86.25%.

@@            Coverage Diff             @@
##             main    #2355      +/-   ##
==========================================
- Coverage   93.92%   93.83%   -0.09%     
==========================================
  Files         210      212       +2     
  Lines        6237     6312      +75     
  Branches     1386     1405      +19     
==========================================
+ Hits         5858     5923      +65     
- Misses        379      389      +10     

Files Changed	Coverage Δ
.../domain/rumEventsCollection/view/viewCollection.ts	100.00% <ø> (ø)
...mEventsCollection/view/interactionCountPolyfill.ts	47.05% <47.05%> (ø)
...ages/rum-core/src/browser/performanceCollection.ts	51.51% <60.00%> (-0.53%)	⬇️
packages/core/src/tools/experimentalFeatures.ts	100.00% <100.00%> (ø)
...entsCollection/view/trackInteractionToNextPaint.ts	100.00% <100.00%> (ø)
...omain/rumEventsCollection/view/trackViewMetrics.ts	98.21% <100.00%> (+1.95%)	⬆️
.../src/domain/rumEventsCollection/view/trackViews.ts	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

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[bcaudan]

💬 suggestion: ‏cf codecov, what about adding a test for this code path?