Fix rebase error

I introduced this error some time ago while resolving a rebase conflict.
It is not caught by tests at the point in the test262 repo history where
we currently are, but it will be covered by tests when we are all caught
up.

Author: ptomato

lib/calendar.ts

@@ -1728,7 +1728,7 @@ abstract class GregorianBaseHelper extends HelperBase {
         // Prefer displaying an era alias, instead of "gregory-inverse"
         const preferredName = names?.[0];
         const expected = preferredName ? `${value} (also called ${preferredName})` : value;
-        throw new RangeErrorCtor(`Input ${name} ${currentValue} doesn't match calculated value ${expected}`);
+        throw new RangeErrorCtor(`Input ${property} ${currentValue} doesn't match calculated value ${expected}`);
       }
     };
     const eraFromYear = (year: number) => {