TrigHLTJetHypo+TriggerMenuMT: use exception for empty HypoTool

Throw a NoHypoToolCreated exception in case no HypoTool was created in the generator function. Returning None as in the previous code results in duplicate empty tool names in the ToolHandleArray (ATR-23920).

In addition remove the redundant copy of tool names and getTools accessors in MenuSequence (the ToolHandleArrary already ensures we are not adding any duplicates).

Also remove a few explicitly set log-levels in various places.