Menu : deprecate props.mode / always support full capabilities + icons

[amal-k-joy]

Contributes #18338

Adopt changes from jans PR for deprecating mode

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.34%. Comparing base (b67877b) to head (a5ba6ac).
Report is 15 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #18703      +/-   ##
==========================================
- Coverage   84.97%   84.34%   -0.64%     
==========================================
  Files         408      408              
  Lines       14542    14645     +103     
  Branches     4764     4771       +7     
==========================================
- Hits        12357    12352       -5     
- Misses       2024     2132     +108     
  Partials      161      161              

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