fix: TraceableChainActivator type exception without Debugmode

[AlfoMart]

With update the default class for flagception.activator.chain_activator was set to Flagception\Activator\ChainActivator but within src/Profiler/FeatureDataCollector.php type was still only accepting TraceableChainActivator

[floplus]

@wopoczynski @carlosjfernandes what happens if the collect method of the FeatureDataCollector ist called? The getTrace method does not exist. So this won't work. The collect method would have to check on !instance of TraceableChainActivator and then just return. Or am i wrong?