Problem adding `Context` context parameter to idstore and event endpoints

When attempting to add a context parameter, the compiler complained about the Context type not implementing Decode, when this has not happened for other ledger endpoints.

For example: Changing

fn get_from_recall_phrase(
        &self,
        args: idstore::GetFromRecallPhraseArgs,
    ) -> Result<idstore::GetReturns, ManyError>

to

fn get_from_recall_phrase(
        &self,
        args: idstore::GetFromRecallPhraseArgs,
        context: Context
    ) -> Result<idstore::GetReturns, ManyError>

reproduces the compiler error mentioned.

Start by tracing the get_from_recall_phrase entry point and the idstore and event endpoint definitions, then inspect how Context and Decode are handled for other ledger endpoints. Confirm the compiler error and compare the relevant endpoint signatures; the work is done when the intended Context parameter compiles consistently for these endpoints.