perf(RouterView): avoid parent rerenders when possible

[posva]

Close #1701

[netlify[bot]]

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Name	Link
🔨 Latest commit	1191594e9a95cb855d31046ae0df0443c65cadbf
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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (66a6f54) 90.77% compared to head (1191594) 90.87%. Report is 7 commits behind head on main.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2082      +/-   ##
==========================================
+ Coverage   90.77%   90.87%   +0.10%     
==========================================
  Files          24       24              
  Lines        1116     1118       +2     
  Branches      348      348              
==========================================
+ Hits         1013     1016       +3     
  Misses         63       63              
+ Partials       40       39       -1     

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