Support invalidating connections when related local entry changed #2115
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Purpose
I introduced an enhancement to the way we handle connections in relation to local entries.
A mechanism was established where the key associated with a localEntry is passed from the InvokeMediator
to the TemplateMediator then further propagated to the TemplateContext, ensuring that the specific localEntry is accessible from the connection handling code.
With the availability of the localEntry key, each active connection(dynamic/static) has been bound to its respective localEntry in a map.
So when a localEntry is undeployed or removed, this change is detected by the Synapse Observer, and the connections associated with that specific localEntry are invalidated.
Fixes: wso2/micro-integrator#3002