fix(46712): Add "exceptZero" for "signDisplay" option of Intl.NumberFormat() (microsoft#46740)

Author: iAziz786

src/lib/es2020.intl.d.ts

@@ -200,15 +200,15 @@ declare namespace Intl {
     interface NumberFormatOptions {
         compactDisplay?: "short" | "long" | undefined;
         notation?: "standard" | "scientific" | "engineering" | "compact" | undefined;
-        signDisplay?: "auto" | "never" | "always" | undefined;
+        signDisplay?: "auto" | "never" | "always" | "exceptZero" | undefined;
         unit?: string | undefined;
         unitDisplay?: "short" | "long" | "narrow" | undefined;
     }
 
     interface ResolvedNumberFormatOptions {
         compactDisplay?: "short" | "long";
         notation?: "standard" | "scientific" | "engineering" | "compact";
-        signDisplay?: "auto" | "never" | "always";
+        signDisplay?: "auto" | "never" | "always" | "exceptZero";
         unit?: string;
         unitDisplay?: "short" | "long" | "narrow";
     }