[Android] Priorize timer instead HDMI_AUDIOPLUG on refreshrate switch

[peak3d]

Description

In the current implementation a display mode change is finished, if the android device implements HDMI_AUDIO_PLUG event and if this intent arrives with state "connected", regardless what "delay after refreshrate" is set in kodi system settings.

This PR changes the behaviour in a way that timer has higher priority and the end of the mode switch is when the timer expires.

Motivation and Context

Users need the timer because of:

• HDCP issues on NVIDIA Shield TV (OS 8.0.1+)
• Multi - HDMI connections (Box -> AVR -> TV)
• ...

How Has This Been Tested?

Tested on "broken" NVIDIA Shield TV 8.0.1 playing DRM secure, which requires HDCP.

• Without this PR Vide starts, after about 2 seconds HDCP screen pops up and playback refuses
• With this PR and set delay to 5 seconds, stream starts later, but HDCP errors disappear.

Types of change

• Bug fix (non-breaking change which fixes an issue)
• Clean up (non-breaking change which removes non-working, unmaintained functionality)
• Improvement (non-breaking change which improves existing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that will cause existing functionality to change)
• Cosmetic change (non-breaking change that doesn't touch code)
• None of the above (please explain below)

[ksooo]

Code looks good to me.

[ksooo]

Runtime tested on 8.0.1 - works as described/expected.