Fix leading 0s breaking row interactions

[everett980]

Which problem is this PR solving?

• Closes Redirect trace/idWithoutLeading0s to trace/fullId #548

Short description of the changes

• Handle leading 0s in trackParent for expanding/collapsing a row
• Improve test coverage in TraceTimelineViewer/duck.track.tsx

[codecov]

Codecov Report

Merging #566 into master will increase coverage by 0.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #566      +/-   ##
==========================================
+ Coverage   89.98%   90.05%   +0.07%     
==========================================
  Files         214      214              
  Lines        5210     5210              
  Branches     1326     1327       +1     
==========================================
+ Hits         4688     4692       +4     
+ Misses        479      475       -4     
  Partials       43       43              

Impacted Files	Coverage Δ
...nents/TracePage/TraceTimelineViewer/duck.track.tsx	100.00% <100.00%> (+10.71%)	⬆️
...eViewer/TimelineHeaderRow/TimelineViewingLayer.tsx	88.13% <0.00%> (-3.39%)	⬇️

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