[PropertyAccess] Fixed inverted logic
minor #10957 [PropertyAccess] Fixed inverted logic (webmozart)

This PR was merged into the 2.4 branch.

Discussion
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[PropertyAccess] Fixed inverted logic

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Made the logic of the property "ignoreInvalidIndices" consistent with the master branch.

Commits
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f42e588 [PropertyAccess] Fixed inverted logic