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

[Owen Pan via cfe-commits]

================
@@ -5267,7 +5267,7 @@ struct FormatStyle {
            EmptyLineBeforeAccessModifier == R.EmptyLineBeforeAccessModifier &&
            ExperimentalAutoDetectBinPacking ==
                R.ExperimentalAutoDetectBinPacking &&
-           ExportBlockIndentation == R.ExportBlockIndentation &&
+           IndentExportBlock == R.IndentExportBlock &&
----------------
owenca wrote:

ditto

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