Shacl validation may leave threads running

[hmottestad]

Current Behavior

https://github.com/eclipse/rdf4j/blob/846122c8c7ddac98f7afd0e6cbd55387fd4d2174/core/sail/shacl/src/main/java/org/eclipse/rdf4j/sail/shacl/ShaclSailConnection.java#L520

Throwing an exception without either cancelling or waiting for the rest of the tasks will leave them hanging (and unclosed).

Expected Behavior

All tasks are either successfully canceled or finished.

Steps To Reproduce

No response

Version

3.7.2 and others

Are you interested in contributing a solution yourself?

Yes

Anything else?

No response