[Telemetry API] Prevent Subscriptions with different options from overwriting each other

[jvigliotta]

Closes #7933

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 57.24%. Comparing base (ea9947c) to head (6569c75).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7930      +/-   ##
==========================================
- Coverage   57.66%   57.24%   -0.42%     
==========================================
  Files         677      677              
  Lines       27373    27404      +31     
  Branches     2689     2689              
==========================================
- Hits        15784    15688      -96     
- Misses      11250    11375     +125     
- Partials      339      341       +2     

Flag	Coverage Δ
e2e-ci	62.63% <100.00%> (+0.15%)	⬆️
e2e-full	23.59% <5.26%> (-34.55%)	⬇️
unit	49.34% <65.78%> (-0.02%)	⬇️

Files with missing lines	Coverage Δ
example/generator/GeneratorMetadataProvider.js	100.00% <ø> (ø)
example/generator/StateGeneratorProvider.js	100.00% <100.00%> (ø)
src/api/telemetry/TelemetryAPI.js	90.11% <100.00%> (+0.90%)	⬆️

... and 19 files with indirect coverage changes

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[akhenry]

I think the hash code is the right approach here, thanks. I think we can simplify the code a little with a few tweaks,