Fix missing grid ticks in dotplot

[cmdcolin]

Also adds a overflow:hidden to the LGV overview scale bar header, currently the text can go outside the box which is visually a bit glitchy

Before

After

Dotplot

Before

After

[codecov]

Codecov Report

Merging #3525 (08f3737) into main (b645ef1) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #3525   +/-   ##
=======================================
  Coverage   62.57%   62.58%           
=======================================
  Files         862      862           
  Lines       30164    30164           
  Branches     7234     7234           
=======================================
+ Hits        18875    18877    +2     
+ Misses      11101    11099    -2     
  Partials      188      188           

Impacted Files	Coverage Δ
...c/LinearGenomeView/components/OverviewScalebar.tsx	88.04% <ø> (ø)
...ns/dotplot-view/src/DotplotView/components/util.ts	86.36% <100.00%> (ø)
...ns/linear-genome-view/src/LinearGenomeView/util.ts	95.45% <100.00%> (ø)
...s/dotplot-view/src/DotplotView/components/Axes.tsx	96.96% <0.00%> (+3.03%)	⬆️

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