Fix warnings for unmet dependencies from muon trigger

A few fixes to the muon trigger configuration to fix warnings about unmet data dependencies (ATR-20488): -Adjust initialisation of read handles in InDetExtensionAlg so that unused read handle keys get cleared -Configure tools used in muon trigger to not use Vertex or CaloCell information -Only retrieve the track isolation tool in the track material provider if we're using the measured calo energy (the track isolation is only used to set the flag to use the measured energy to false) -Make sure TriggerFlags.MuonSlice.doTrigMuonConfig is set to true before we include any offline muon configuration so that the offline algoriths/tools are configured correctly for the trigger