[tbb-bugs] #29467 [Applications/Tor Browser]: Revert fix for #29182 and backport upstream arc4random_buf fix

[Tor Bug Tracker & Wiki]

#29467: Revert fix for #29182 and backport upstream arc4random_buf fix
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     Reporter:  gk                   |      Owner:  tbb-team
         Type:  defect               |     Status:  new
     Priority:  Medium               |  Milestone:
    Component:  Applications/Tor     |    Version:
  Browser                            |   Keywords:  TorBrowserTeam201902,
     Severity:  Normal               |  GeorgKoppen201902, TBA-a3
Actual Points:                       |  Parent ID:
       Points:                       |   Reviewer:
      Sponsor:                       |
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 We should use https://hg.mozilla.org/mozilla-central/rev/57664c81a1de
 instead of disabling `arc4rdandom_buf` for our Android builds.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29467>
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