Fix: failed to get ingress gateway node error

[VishalDalwadi]

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• My changes affect only 10 files or less.
• I have performed a self-review of my code and tested it.
• If it is a new feature, I have added thorough tests, my code is <= 1450 lines.
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[tenki-reviewer]

Tenki Code Review - Complete

Files Reviewed: 1
Findings: 0

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This PR correctly guards gwClient field population behind the found flag, preventing writes to a zero-value ExtClient struct when no matching ext-client exists for a given ingress gateway. The change is a clean, targeted bug fix with no issues identified.

Files Reviewed (1 files)

pro/controllers/users.go