Erroneous clearing of active aggregate map in Aggregate mediator

[SanojPunchihewa]

Description

In the Aggregate mediator, when an exception happens we are clearing the whole active aggregate map. Ideally we should only remove the aggregate which has caused the exception.

[1] - https://github.com/wso2/wso2-synapse/blob/master/modules/core/src/main/java/org/apache/synapse/mediators/eip/aggregator/AggregateMediator.java#L833

Steps to Reproduce

Send concurrent requests to a flow with an Aggregate mediator which will throw an exception in the mediation

Version

4.3.0

Environment Details (with versions)

No response