### CI Link

https://gradle-enterprise.elastic.co/s/gcyi7azxnlpck/tests/:x-pack:plugin:autoscaling:test/org.elasticsearch.xpack.autoscaling.capacity.AutoscalingDeciderResultsTests/testRequiredCapacity

### Repro line

`./gradlew ':x-pack:plugin:autoscaling:test' --tests "org.elasticsearch.xpack.autoscaling.capacity.AutoscalingDeciderResultsTests.testRequiredCapacity" -Dtests.seed=2E2DFCE718729D4D -Dtests.locale=en-PH -Dtests.timezone=AST -Druntime.java=17`

### Does it reproduce?

Yes

### Applicable branches

main

### Failure history

https://gradle-enterprise.elastic.co/scans/tests?search.timeZoneId=Europe/Berlin&tests.container=org.elasticsearch.xpack.autoscaling.capacity.AutoscalingDeciderResultsTests&tests.test=testRequiredCapacity

### Failure excerpt

```
java.lang.IllegalArgumentException: processors must be a non-negative number; provided [0.0]
        at __randomizedtesting.SeedInfo.seed([2E2DFCE718729D4D:F14848089DDDD218]:0)
        at org.elasticsearch.common.unit.Processors.of(Processors.java:58)
        at org.elasticsearch.xpack.autoscaling.capacity.AutoscalingCapacity$Builder.total(AutoscalingCapacity.java:288)
        at org.elasticsearch.xpack.autoscaling.capacity.AutoscalingDeciderResultsTests.randomCapacity(AutoscalingDeciderResultsTests.java:161)
        at org.elasticsearch.xpack.autoscaling.capacity.AutoscalingDeciderResultsTests.lambda$testRequiredCapacity$1(AutoscalingDeciderResultsTests.java:65)
        at java.base/java.util.stream.IntPipeline$1$1.accept(IntPipeline.java:180)
        at java.base/java.util.stream.Streams$RangeIntSpliterator.forEachRemaining(Streams.java:104)
        at java.base/java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:711)
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
```
x-pack/plugin/autoscaling/src/test/java/org/elasticsearch/xpack/autoscaling/capacity/AutoscalingCalculateCapacityServiceTests.java
FixedAutoscalingDeciderService defaultOn = new FixedAutoscalingDeciderService() {
            @Override
            public boolean defaultOn() {
                return true;
            }
            @Override
            public String name() {
                return "default_on";
            }
        };
        FixedAutoscalingDeciderService defaultOff = new FixedAutoscalingDeciderService();
        AutoscalingCalculateCapacityService service = new AutoscalingCalculateCapacityService(Set.of(defaultOn, defaultOff));
        ClusterState state = ClusterState.builder(ClusterName.DEFAULT)
            .metadata(
                Metadata.builder()
                    .putCustom(
                        AutoscalingMetadata.NAME,
                        new AutoscalingMetadata(
                            new TreeMap<>(
                                Map.of("test", new AutoscalingPolicyMetadata(new AutoscalingPolicy("test", randomRoles(), new TreeMap<>())))
                            )
                        )
                    )
            )
            .build();
        assertThat(
            service.calculate(state, ClusterInfo.EMPTY, SnapshotShardSizeInfo.EMPTY, AutoscalingNodesInfo.EMPTY, () -> {})
                .get("test")
                .results()
                .keySet(),