[clang] [clang-format] Add AlignAfterOpenBracketOptions (PR #108332)

[Björn Schäpers via cfe-commits]

================
@@ -1169,6 +1181,18 @@ template <> struct MappingTraits<FormatStyle> {
     IO.mapOptional("WhitespaceSensitiveMacros",
                    Style.WhitespaceSensitiveMacros);
 
+    // If AlignAfterOpenBracket was specified but AlignAfterOpenBracketBreak
+    // was not, initialize the latter for backwards compatibility.
+    if ((Style.AlignAfterOpenBracket == FormatStyle::BAS_AlwaysBreak ||
+         Style.AlignAfterOpenBracket == FormatStyle::BAS_BlockIndent) &&
+        Style.AlignAfterOpenBracketBreak ==
+            FormatStyle::AlignAfterOpenBracketCustom()) {
+      if (Style.AlignAfterOpenBracket == FormatStyle::BAS_AlwaysBreak)
+        Style.AlignAfterOpenBracketBreak.InIfConditionalStatements = true;
----------------
HazardyKnusperkeks wrote:

```suggestion
      Style.AlignAfterOpenBracketBreak.InIfConditionalStatements = Style.AlignAfterOpenBracket == FormatStyle::BAS_AlwaysBreak;
```

https://github.com/llvm/llvm-project/pull/108332