Prioritize drop of common types for nan-boxed JsValue

[HalidOdat]

This is a small optimization on of the drop method on nan-boxed values, rearrange the checks so the common pointer types get checked first. Since this method is called so many times this leads to some performance improvements.

Benchmarks

Main

PROGRESS Richards
RESULT Richards 123
PROGRESS DeltaBlue
RESULT DeltaBlue 111
PROGRESS Encrypt
PROGRESS Decrypt
RESULT Crypto 142
PROGRESS RayTrace
RESULT RayTrace 290
PROGRESS Earley
PROGRESS Boyer
RESULT EarleyBoyer 356
PROGRESS RegExp
RESULT RegExp 70.2
PROGRESS Splay
RESULT Splay 474
PROGRESS NavierStokes
RESULT NavierStokes 335
SCORE 197

PR

PROGRESS Richards
RESULT Richards 128
PROGRESS DeltaBlue
RESULT DeltaBlue 111
PROGRESS Encrypt
PROGRESS Decrypt
RESULT Crypto 149
PROGRESS RayTrace
RESULT RayTrace 292
PROGRESS Earley
PROGRESS Boyer
RESULT EarleyBoyer 364
PROGRESS RegExp
RESULT RegExp 71.1
PROGRESS Splay
RESULT Splay 474
PROGRESS NavierStokes
RESULT NavierStokes 347
SCORE 201

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	50,254	50,254	0
Passed	46,451	46,451	0
Ignored	1,634	1,634	0
Failed	2,169	2,169	0
Panics	0	0	0
Conformance	92.43%	92.43%	0.00%

[jedel1043]

Looks good!