fix(SideNavigation): Fix Rendering and Event Handling

[MarcusNotheis]

Fixes #167
Fixes #161

[codecov-io]

Codecov Report

Merging #189 into master will increase coverage by 0.09%.
The diff coverage is 92%.

@@            Coverage Diff             @@
##           master     #189      +/-   ##
==========================================
+ Coverage   73.67%   73.77%   +0.09%     
==========================================
  Files         150      150              
  Lines        3499     3500       +1     
  Branches      617      613       -4     
==========================================
+ Hits         2578     2582       +4     
+ Misses        708      705       -3     
  Partials      213      213

Impacted Files	Coverage Δ
packages/main/src/webComponents/Popover/index.tsx	84.21% <100%> (-0.79%)	⬇️
...kages/main/src/components/SideNavigation/index.tsx	73.52% <50%> (+7.73%)	⬆️
...in/src/components/SideNavigationListItem/index.tsx	90.56% <95.23%> (-0.93%)	⬇️

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