[clang-format] AllowShortBlocksOnASingleLine=Always overrides brace wrapping for functions

In version 22 `AllowShortBlocksOnASingleLine=Always` overrides
```yaml
BraceWrapping:
AfterFunction: true
```

and results in function bodies being compactified:
```c++
void f()
{return ;}
```

Start by reproducing the reported C++ formatting with AllowShortBlocksOnASingleLine=Always and BraceWrapping.AfterFunction=true, then trace the clang-format handling for these two options. Done means the configuration no longer compactifies the function body and preserves the requested brace wrapping.

Written by the indexing model from the issue text.