Fix Typing for cached_data_property

[MineFartS]

Description

All properties decorated with 'cached_data_property' were not being detected as properties. This fix forces the typing/language server to see 'cached_data_property' as 'cached_property'.

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the docstring for new or existing methods
• I have added tests when applicable

[Copilot]

Pull request overview

This PR adjusts the cached_data_property decorator implementation so that type checkers/language servers treat attributes decorated with it as cached_property-like properties, improving static typing ergonomics across the PlexAPI object model.

Changes:

• Added a __new__ override on cached_data_property to influence constructor return typing toward cached_property.

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[JonnyWong16]

Thanks.