check port with bind over connect_ex

[adhami3310]

No description provided.

[greptile-apps]

PR Summary

Improves port availability checking in reflex/utils/processes.py by switching from socket.connect_ex() to socket.bind() for more reliable port verification.

• Changed port checking method in reflex/utils/processes.py from connect_ex to bind for more accurate availability detection
• Added PermissionError handling to handle cases where port binding requires elevated privileges
• Renamed _is_address_responsive to _can_bind_at_port to better reflect the new implementation's purpose
• Inverted return logic in is_process_on_port to align with bind-based checking semantics

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[codspeed-hq]

CodSpeed Performance Report

Merging #5564 will not alter performance

_{Comparing check-port-with-bind-over-connect_ex (c39da8c) with main (3c687f4)}

Summary

✅ 8 untouched benchmarks

[sorousch9]

@adhami3310 In Windows Subsystem for Linux WSL, the recursive change_port call can overflow the call stack and trigger a RecursionError.