Add explicit json support to .clang-format. NFC (#26466)

sbc100 · web-flow · commit ff125f74e583 · 2026-03-17T08:50:17.000-07:00
I noticed that the version of clang-format uses in CI was reporting
`Configuration file(s) do(es) not support Json`.
diff --git a/.clang-format b/.clang-format
@@ -14,3 +14,5 @@ Language: JavaScript
 BasedOnStyle: LLVM
 ColumnLimit: 100
 ---
+Language: Json
+BasedOnStyle: LLVM
