[StaticTypeMapper] Clean up NameNodeMapper check Scalar and class exists

[samsonasik]

• scalar check should check on Identifier, which handled on IdentifierNodeMapper
• class exists seems not needed, test run test and seems still working ok

[samsonasik]

NameNodeMapper seems registered after FullyQualifiedNodeMapper so it should be safe to no need check of it.

rector-src/src/DependencyInjection/LazyContainerFactory.php

Lines 358 to 363 in 558f44d

	private const PHP_PARSER_NODE_MAPPER_CLASSES = [
	ExprNodeMapper::class,
	FullyQualifiedNodeMapper::class,
	IdentifierNodeMapper::class,
	IntersectionTypeNodeMapper::class,
	NameNodeMapper::class,

[samsonasik]

All checks have passed 🎉 @TomasVotruba I am merging it ;)