### CI Link

https://gradle-enterprise.elastic.co/s/hpsiqb6ogssti/tests/:x-pack:plugin:autoscaling:test/org.elasticsearch.xpack.autoscaling.capacity.AutoscalingCalculateCapacityServiceTests/testMultiplePoliciesFixedCapacity

### Repro line

`./gradlew ':x-pack:plugin:autoscaling:test' --tests "org.elasticsearch.xpack.autoscaling.capacity.AutoscalingCalculateCapacityServiceTests.testMultiplePoliciesFixedCapacity" -Dtests.seed=59B9B4C860720152 -Dtests.locale=es-PR -Dtests.timezone=Europe/Mariehamn -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.AutoscalingCalculateCapacityServiceTests

### Failure excerpt

```
java.lang.IllegalArgumentException: processors must be a non-negative number; provided [0.0]
        at __randomizedtesting.SeedInfo.seed([59B9B4C860720152:A780761874932F2D]:0)
        at org.elasticsearch.common.unit.Processors.of(Processors.java:58)
        at org.elasticsearch.xpack.autoscaling.capacity.FixedAutoscalingDeciderService.lambda$static$0(FixedAutoscalingDeciderService.java:35)
        at org.elasticsearch.common.settings.Setting.get(Setting.java:482)
        at org.elasticsearch.common.settings.Setting.get(Setting.java:476)
        at org.elasticsearch.xpack.autoscaling.capacity.FixedAutoscalingDeciderService.scale(FixedAutoscalingDeciderService.java:55)
        at org.elasticsearch.xpack.autoscaling.capacity.AutoscalingCalculateCapacityService.calculateForDecider(AutoscalingCalculateCapacityService.java:226)
        at org.elasticsearch.xpack.autoscaling.capacity.AutoscalingCalculateCapacityService.lambda$calculateForPolicy$3(AutoscalingCalculateCapacityService.java:167)
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
        at java.base/java.util.TreeMap$EntrySpliterator.forEachRemaining(TreeMap.java:3287)
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
        at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921)
        at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682)
        at org.elasticsearch.xpack.autoscaling.capacity.AutoscalingCalculateCapacityService.calculateForPolicy(AutoscalingCalculateCapacityService.java:168)
        at org.elasticsearch.xpack.autoscaling.capacity.AutoscalingCalculateCapacityService.lambda$calculate$2(AutoscalingCalculateCapacityService.java:124)
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
        at java.base/java.util.TreeMap$EntrySpliterator.forEachRemaining(TreeMap.java:3287)
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
        at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921)
        at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682)
        at org.elasticsearch.xpack.autoscaling.capacity.AutoscalingCalculateCapacityService.calculate(AutoscalingCalculateCapacityService.java:134)
        at org.elasticsearch.xpack.autoscaling.capacity.AutoscalingCalculateCapacityServiceTests.testMultiplePoliciesFixedCapacity(AutoscalingCalculateCapacityServiceTests.java:66)
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(),