Fix syntax error caused by invalid PHP 8.4 property hooks

[insign]

Removes PHP 8.4 property hooks from the AbstractTwoProvidersTest file because they are merely cosmetic and break older PHP versions.

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PR created automatically by Jules for task 3355644320299809478 started by @insign

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[insign]

Closing and deleting this obsolete branch per maintainer request.

[google-labs-jules]

Closing and deleting this obsolete branch per maintainer request.

Understood. Acknowledging that this work is now obsolete and stopping work on this task.