chore[docs]: nonpayable internal function behaviour

[pcaversaccio]

What I did

Resolves #37584of Attackathon | Ethereum Protocol. Add a note to clarify that nonpayable internal functions can be called via external payable functions.

How I did it

Brain.

How to verify it

Skills.

Commit message

this commit adds a note to clarify that `nonpayable` `internal`
functions can be called via `external` `payable` functions.

Description for the changelog

Add a note to clarify that nonpayable internal functions can be called via external payable functions.

Cute Animal Picture

[cyberthirst]

can you please define in the docs what is means that an internal function is payable? ie that the semantics are whether it can/cannot touch msg.value

[pcaversaccio]

can you please define in the docs what is means that an internal function is payable? ie that the semantics are whether it can/cannot touch msg.value

bb40500

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.46%. Comparing base (eee31e7) to head (bb40500).
Report is 12 commits behind head on master.

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HEAD has 121 uploads less than BASE

Flag	BASE (eee31e7)	HEAD (bb40500)
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Additional details and impacted files

@@             Coverage Diff             @@
##           master    #4416       +/-   ##
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- Coverage   91.68%   51.46%   -40.23%     
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  Files         116      119        +3     
  Lines       16481    16615      +134     
  Branches     2778     2794       +16     
===========================================
- Hits        15111     8551     -6560     
- Misses        939     7436     +6497     
- Partials      431      628      +197     

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