Normative: Disallow one day long time zone offsets

Built-in time zones don't support an offset of `nsPerDay` nanoseconds and there
isn't any reason user-defined time zones should be able to support time zones
offsets of `nsPerDay` nanoseconds.

spec/timezone.html

@@ -639,7 +639,7 @@ <h1>GetOffsetNanosecondsFor ( _timeZone_, _instant_ )</h1>
         1. If Type(_offsetNanoseconds_) is not Number, throw a *TypeError* exception.
         1. If IsIntegralNumber(_offsetNanoseconds_) is *false*, throw a *RangeError* exception.
         1. Set _offsetNanoseconds_ to ℝ(_offsetNanoseconds_).
-        1. If abs(_offsetNanoseconds_) &gt; nsPerDay, throw a *RangeError* exception.
+        1. If abs(_offsetNanoseconds_) &ge; nsPerDay, throw a *RangeError* exception.
         1. Return _offsetNanoseconds_.
       </emu-alg>
     </emu-clause>