Issue with Tone.js library on iOS14 + Mobile Safari

[tpronk]

e2e testing of an experiment with sound in it (this one) produced the error message shown below.

A follow-up unit test gave the error message below.

  ReferenceError: Can't find variable: OscillatorNode
  https://cdnjs.cloudflare.com/ajax/libs/tone/13.8.6/Tone.min.js:1:141240
  i@https://cdnjs.cloudflare.com/ajax/libs/tone/13.8.6/Tone.min.js:1:355
  https://cdnjs.cloudflare.com/ajax/libs/tone/13.8.6/Tone.min.js:1:49944
  i@https://cdnjs.cloudflare.com/ajax/libs/tone/13.8.6/Tone.min.js:1:355
  https://cdnjs.cloudflare.com/ajax/libs/tone/13.8.6/Tone.min.js:1:30225
  i@https://cdnjs.cloudflare.com/ajax/libs/tone/13.8.6/Tone.min.js:1:355
  https://cdnjs.cloudflare.com/ajax/libs/tone/13.8.6/Tone.min.js:1:289965
  i@https://cdnjs.cloudflare.com/ajax/libs/tone/13.8.6/Tone.min.js:1:355
  https://cdnjs.cloudflare.com/ajax/libs/tone/13.8.6/Tone.min.js:1:766
  https://cdnjs.cloudflare.com/ajax/libs/tone/13.8.6/Tone.min.js:1:776
  https://cdnjs.cloudflare.com/ajax/libs/tone/13.8.6/Tone.min.js:1:186
  global code@https://cdnjs.cloudflare.com/ajax/libs/tone/13.8.6/Tone.min.js:1:189

According to this ticket in the Tone.js repo, it might be resolved by updating tone to version 14.x

[thewhodidthis]

Addressed with psychopy/psychopy/pull/3219 and /pull/212