[Fix #3453] Setting overflow strategy to unbounded for process events…

[fjtirado]

… (apache#3455)

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[domhanak]

fyi @gmunozfe

[mareknovotny]

not sure here, but why this backport to 9.99.x-prod? the latest released OSL was on top of 9.100.x-prod if i am not mistaken, cc @rgdoliveira

[fjtirado]

@mareknovotny I do not know. Lets confirm which is the right branch to get this included in the prod builds that will be released in future.

[domhanak]

Latest is 9.100.x-prod thanks @mareknovotny for noticing. It should be there if ti should make it into a micro if any @fjtirado for the future release we need to do a new one (not yet done)

[mareknovotny]

next release will be anyway synced with main branch from upstream

[rgdoliveira]

if we will do a 1.33.1 release of OSL then it makes sense to backport this PR to branch 9.100.x-prod, but if there are no plans, than it does not make sense to backport it.