[clang] [clang-format]: Add `Custom` to `ShortFunctionStyle`; add new AllowShortFunctionsOnASingleLineOptions for granular setup (PR #134337)

[via cfe-commits]

================
@@ -1501,6 +1536,8 @@ FormatStyle getLLVMStyle(FormatStyle::LanguageKind Language) {
   LLVMStyle.AllowShortCompoundRequirementOnASingleLine = true;
   LLVMStyle.AllowShortEnumsOnASingleLine = true;
   LLVMStyle.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
+  LLVMStyle.AllowShortFunctionsOnASingleLineOptions = {};
----------------
irymarchyk wrote:

Thanks, fixed!

https://github.com/llvm/llvm-project/pull/134337