dtoa/utils.h doesn't parse after recent SDK changes

https://bugs.webkit.org/show_bug.cgi?id=259789
rdar://113341253

Reviewed by Wenson Hsieh.

* Source/WTF/wtf/dtoa/utils.h:
Recent SDK changes resulted in CoreUtils headers getting imported into
translation units (OutputContext.mm) that also import `dtoa/utils.h`.

The aforementioned CoreUtils headers have long had macros Min() and Max(),
which conflict with our template functions' definitions, and make utils.h
fail to parse.

As a quick workaround, undefine the rogue macros before our Min() and Max().

Canonical link: https://commits.webkit.org/266550@main

Source/WTF/wtf/dtoa/utils.h

@@ -52,7 +52,6 @@ inline void abort_noreturn() { abort(); }
 #endif
 #endif
 
-
 // Double operations detection based on target architecture.
 // Linux uses a 80bit wide floating point stack on x86. This induces double
 // rounding, which in turn leads to wrong results.
@@ -164,6 +163,15 @@ typedef uint16_t uc16;
   DC_DISALLOW_COPY_AND_ASSIGN(TypeName)
 #endif
 
+// On Cocoa platforms, CoreUtils.h has Min() and Max() macros that sometimes get included above here.
+#ifdef Min
+#undef Min
+#endif
+
+#ifdef Max
+#undef Max
+#endif
+
 namespace WTF {
 namespace double_conversion {