refactor(client): Check EventLoop for repeated callbacks
refactor(client): Check EventLoop for repeated callbacks

open62541/open62541,open62541/open62541,jpfr/open62541,JGrothoff/open62541,jpfr/open62541,open62541/open62541,open62541/open62541,JGrothoff/open62541,jpfr/open62541,JGrothoff/open62541,JGrothoff/open62541,jpfr/open62541