RDKEMW-24854: Remove active scan on DeepSleep wake-up

[DevikaJaladi]

Reason for change: Remove rescan request upon wake-up(NSM-ON).
Priority: P1
Test Procedure: Refer ticket
Risks: Low

Signed-off-by: Jaladi djalad690@cable.comcast.com

[Copilot]

🟢 Approval recommended

The change is a minimal, targeted removal that matches the PR intent and does not introduce new logic or interfaces.

Pull request overview

This PR updates the DeepSleep wake-up handling in NetworkManagerImplementation to stop triggering an active WiFi scan when waking with Network Standby enabled, aligning wake behavior with the stated requirement to remove the rescan request.

Changes:

• Removed the DeepSleep wake-up call to StartWiFiScan() (and its associated logging/error handling) from OnPowerModeChanged.
• Preserved existing DHCP lease reacquisition behavior for wlan0 and eth0 on wake.

File summaries

File	Description
plugin/NetworkManagerImplementation.cpp	Removes active WiFi scan trigger on DeepSleep wake while keeping DHCP reacquire logic intact.

Review details

• Files reviewed: 1/1 changed files
• Comments generated: 0
• Review effort level: Lite

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