Update Conditions to support PHP Attributes

[rafaldziubak]

Overview

This pull request updates the custom rules conditions to support PHP attributes for plugin discovery. The change aligns the code with Drupal’s latest standards, preparing it for future upgrades.

Before

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After

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Technical Details

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Comments

The update does not remove any annotations, it only adds PHP attributes.

Release notes snippet

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[jackrabbithanna]

In Drupal 10.2 / 10.3 various plugin types now support PHP Attributes, and annotations will be deprecated and in Drupal 12 will not be supported.
In Drupal 10.3, it broke Rules module and required a new version (4.0.x) and plugins supporting PHP Attributes.
The plan for this PR will be to have it as an option for those who make the switch to Rules 4.x
We'll merge this code for sure by the end of the year, and will consider making CiviCRM Entity require Drupal 10.3, but only after a few months after 10.2 has gone unsupported (Dec 2024)

For those people choosing to use newer versions, this PR is available to use as a patch.