Add test for PropertyFetchTypeResolver

[vhenzl]

Adds missing test for PropertyFetchTypeResolver. See #5299 (comment) for the motivation.

Currently based on v0.9.10 which is the last version where property fetch type resolution worked (although with some errors as the test reveals). Will be rebased later.

[vhenzl]

@TomasVotruba Is it possible to have tests and fixtures targeting only PHP 7.4+ (or even PHP 8.0+) to test typed properties (and native union types)? What's the recommended way to exclude files like ClassWithNativeProps.php from linting, analysing and testing on PHP 7.3?

[samsonasik]

You can create a test like Php74Test in:

https://github.com/rectorphp/rector/blob/dba5b8d7146ac098e9775e3995877f9e9740ecf2/rules/dead-code/tests/Rector/FunctionLike/RemoveDeadReturnRector/Php74Test.php

that uses @requires PHP 7.4 and use FixturePhp74 directory for it:

https://github.com/rectorphp/rector/tree/dba5b8d7146ac098e9775e3995877f9e9740ecf2/rules/dead-code/tests/Rector/FunctionLike/RemoveDeadReturnRector/FixturePhp74

[vhenzl]

This is ready now. Tests are expected to fail because PropertyFetchTypeResolver is broken: instead of the type of a fetched property, it returns the type of the object the property is fetched on (ClassWithNativeProps, ClassWithPhpDocProps).

[samsonasik]

@vhenzl I cherry-picked your commit at PR at #5334

[samsonasik]

Handled at #5334