Add missing decoration of Callable<V>

[jponge]

No description provided.

[jponge]

Must be part of the 1.6.0 backport batch

[codecov]

Codecov Report

Merging #956 (30fbd12) into main (af0811d) will increase coverage by 0.16%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##               main     #956      +/-   ##
============================================
+ Coverage     89.00%   89.16%   +0.16%     
- Complexity     3132     3146      +14     
============================================
  Files           412      412              
  Lines         12576    12585       +9     
  Branches       1592     1595       +3     
============================================
+ Hits          11193    11222      +29     
+ Misses          728      721       -7     
+ Partials        655      642      -13     

Impacted Files	Coverage Δ
...iny/context/BaseContextPropagationInterceptor.java	89.11% <0.00%> (-2.50%)	⬇️
...llrye/mutiny/infrastructure/CallbackDecorator.java	94.73% <0.00%> (-5.27%)	⬇️
...smallrye/mutiny/infrastructure/Infrastructure.java	65.78% <0.00%> (-1.96%)	⬇️
...mallrye/mutiny/operators/multi/MultiFlatMapOp.java	84.19% <0.00%> (-0.92%)	⬇️
...tiny/operators/multi/MultiBufferWithTimeoutOp.java	73.10% <0.00%> (-0.85%)	⬇️
...subscription/SwitchableSubscriptionSubscriber.java	95.20% <0.00%> (-0.80%)	⬇️
...main/kotlin/io/smallrye/mutiny/coroutines/Multi.kt	80.95% <0.00%> (ø)
...java/io/smallrye/mutiny/helpers/Subscriptions.java	80.66% <0.00%> (+1.65%)	⬆️
...io/smallrye/mutiny/operators/uni/UniMemoizeOp.java	93.20% <0.00%> (+1.94%)	⬆️
... and 4 more