setBreakCutSafetyMargin

Set the safety margin (seconds) added to a break's effective duration before the break-cut timer hard-cuts back to content.

On Android the integrator constructs the renderer, so it can carry its own constructor default for this. Pushing OptiViewAdsConfig.adBreakCutSafetyMarginSec through here keeps the one config object authoritative — otherwise setting it only on the config silently had no effect. Default no-op.