BUGFIX: NodeType->isOfType() respects explicitly removed supertypes

[ComiR]

NodeType->isOfType() returned true if a node type inherited another node types inherited node type which was declared as false in the NodeTypes superTypes.

Check existence of node type in inheritance chain instead of recursing through super types.

[kdambekalns]

According to #2147 this should be reverted for the reasons described there, like it was done with #2139 through #2145.

[kdambekalns]

How to verify it

NodeMixin:
  abstract: true

NodeA:
  superTypes:
    NodeMixin: true

NodeB:
  superTypes:
    NodeA: true
    NodeMixin: false

Check it with $nodeB->isOfType('NodeMixin').

Checklist

• Code follows the PSR-2 coding style
• Tests have been created, run and adjusted as needed
• The PR is created against the lowest maintained branch

[kdambekalns]

Fixes #1983