Avoid overflow when using ChronoUnit.FOREVER with the memoize operator

[cescoffier]

Fix #862.

[codecov]

Codecov Report

Merging #863 (7f18f23) into main (8e1d9a7) will increase coverage by 0.24%.
The diff coverage is 100.00%.

❗ Current head 7f18f23 differs from pull request most recent head 10f7df6. Consider uploading reports for the commit 10f7df6 to get more accurate results

@@             Coverage Diff              @@
##               main     #863      +/-   ##
============================================
+ Coverage     89.06%   89.31%   +0.24%     
- Complexity     3048     3067      +19     
============================================
  Files           383      383              
  Lines         12185    12188       +3     
  Branches       1547     1550       +3     
============================================
+ Hits          10853    10886      +33     
+ Misses          701      683      -18     
+ Partials        631      619      -12     

Impacted Files	Coverage Δ
...ain/java/io/smallrye/mutiny/groups/UniMemoize.java	100.00% <100.00%> (ø)
...utiny/operators/multi/MultiWindowOnDurationOp.java	65.71% <0.00%> (-5.72%)	⬇️
...main/kotlin/io/smallrye/mutiny/coroutines/Multi.kt	80.95% <0.00%> (-4.77%)	⬇️
...tiny/operators/multi/MultiBufferWithTimeoutOp.java	73.10% <0.00%> (-1.69%)	⬇️
...mallrye/mutiny/operators/multi/MultiFlatMapOp.java	85.10% <0.00%> (+0.91%)	⬆️
...smallrye/mutiny/helpers/test/AssertSubscriber.java	91.17% <0.00%> (+1.47%)	⬆️
...java/io/smallrye/mutiny/helpers/Subscriptions.java	80.66% <0.00%> (+1.65%)	⬆️
...y/operators/multi/processors/UnicastProcessor.java	97.41% <0.00%> (+1.72%)	⬆️
...io/smallrye/mutiny/operators/uni/UniMemoizeOp.java	93.20% <0.00%> (+1.94%)	⬆️
...erators/multi/builders/SerializedMultiEmitter.java	81.70% <0.00%> (+2.43%)	⬆️
... and 6 more

[jponge]

Great, thanks!

[jponge]

@cescoffier would you mind signing your commit? (I've added this requirement in branch protection recently)

See git config --global commit.gpgsign true