fix(menu): add RTL chevron menu icon

[V-Ahmetvaliev]

also change ion to nb icon

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• I read and followed the CONTRIBUTING.md guide.
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Short description of what this resolves:

[nnixaa]

@V-Ahmetvaliev @yggg shouldn't we subscribe to changes and change the template based on it?

oudated

[codecov]

Codecov Report

Merging #1042 into next will increase coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##             next    #1042      +/-   ##
==========================================
+ Coverage   82.56%   82.58%   +0.01%     
==========================================
  Files         237      237              
  Lines        7274     7281       +7     
  Branches      635      637       +2     
==========================================
+ Hits         6006     6013       +7     
  Misses       1080     1080              
  Partials      188      188

Impacted Files	Coverage Δ
.../framework/theme/components/menu/menu.component.ts	72.8% <100%> (+1.61%)	⬆️

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