[clang] [clang-format] Rename ExportBlockIndentation -> IndentExportBlock (PR #123493)

[Owen Pan via cfe-commits]

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@@ -2687,7 +2687,7 @@ struct FormatStyle {
   ///    }                         }
   /// \endcode
   /// \version 20
-  bool ExportBlockIndentation;
+  bool IndentExportBlock;
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owenca wrote:

Please keep the options sorted by moving it down to right after `IndentCaseLabels`.

https://github.com/llvm/llvm-project/pull/123493