[clang-format] AllowShortFunctionsOnASingleLine not respected if BraceWrapping AfterFunction

[Tamaranch]

With

Language: Cpp
BasedOnStyle: GNU

this code

void
f () { return; }

is formatted as

void
f ()
{
  return;
}

Setting

Language: Cpp
BasedOnStyle: GNU
BraceWrapping:
  AfterFunction: false
BreakBeforeBraces: Custom

"fixes" the issue.

version: 17.0.6 and 19.0.0_r498302.fa4e8995cb6b