do not force import event and page

[adhami3310]

No description provided.

[greptile-apps]

PR Summary

Major architectural changes to optimize module imports and reduce circular dependencies across the Reflex framework's core modules.

• Introduces PageNamespace and EventNamespace classes in reflex/page.py and reflex/event.py for better module organization
• Moves type checking imports behind TYPE_CHECKING in reflex/page.py to reduce startup time
• Removes direct imports of 'event' and 'page' in reflex/__init__.py, implementing lazy loading through _MAPPING
• Removes deprecated _callback_arg_spec function from reflex/event.py

_{4 files reviewed, 3 comments
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[codspeed-hq]

CodSpeed Performance Report

Merging #5559 will not alter performance

_{Comparing do-not-force-import-event-and-page (b267083) with main (7e0a95f)}

Summary

✅ 8 untouched benchmarks