Fix breakpoint split view SVG export occasionally having wrong clipping

[cmdcolin]

Fixes #4216

It is actually somewhat unclear to me why this is needed, but the clip id appears to be duplicated in the breakpoint split view (top and bottom panels) and is effectively deduped by the addition of a randomness. the randomness is suppressed in jest snapshots since it causes snapshot tests to be unstable

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (39a61ca) 62.90% compared to head (65c157a) 62.88%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4217      +/-   ##
==========================================
- Coverage   62.90%   62.88%   -0.02%     
==========================================
  Files        1071     1071              
  Lines       31199    31200       +1     
  Branches     7455     7455              
==========================================
- Hits        19626    19621       -5     
- Misses      11400    11408       +8     
+ Partials      173      171       -2     

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[cmdcolin]

debugged that this occurs due to the launch breakpoint split view creating two views with the same displayId when it "ports the snapshot of the tracks it was launched from" to the new view. this PR can continue, but the breakpoint split view can strip the displayIds so that it doesnt need this workaround