missing normalization improvement for has

[neeldug]

related to: #1445
It changes the following:

• Adds normalisation check for has

[Razican]

Test262 conformance changes:

Test result	master count	PR count	difference
Total	80,804	80,804	0
Passed	33,162	33,164	+2
Ignored	15,896	15,896	0
Failed	31,746	31,744	-2
Panics	0	0	0
Conformance	41.04%	41.04%	+0.00%

Fixed tests (2):

test/built-ins/Map/prototype/has/normalizes-zero-key.js [strict mode] (previously Failed)
test/built-ins/Map/prototype/has/normalizes-zero-key.js (previously Failed)