Bug fix: viewer not scrolling to toc entry correctly

[fstoe]

I have just fixed a bug. This is related to the table of contents and the ScrollTo component.
Previously, an empty containerRef was passed to it inital, which meant that it did not scroll to the correct position in the TOC.

I used this config prop: windows: [{ manifestId: "https://iiif.ub.uni-leipzig.de/0000034390/manifest.json", canvasIndex: 330,}] for testing.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.52%. Comparing base (05194d8) to head (ee5eae3).
Report is 42 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3926   +/-   ##
=======================================
  Coverage   94.52%   94.52%           
=======================================
  Files         313      313           
  Lines       14767    14787   +20     
  Branches     2496     2496           
=======================================
+ Hits        13958    13978   +20     
  Misses        804      804           
  Partials        5        5           

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[lutzhelm]

It looks to me like this has already been fixed via #4077 in the meantime (also for other affected components), so this PR can be closed?