### 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
boolean useOtherRoles = randomBoolean();
            DiscoveryNode node = new DiscoveryNode(
                nodeId,
                buildNewFakeTransportAddress(),
                Map.of(),
                useOtherRoles ? otherRoles : roles,
                Version.CURRENT
            );
            nodes.add(node);
            if (useOtherRoles == false) {
                long total = randomLongBetween(1, 1L << 40);
                DiskUsage diskUsage = new DiskUsage(nodeId, null, randomAlphaOfLength(5), total, randomLongBetween(0, total));
                leastUsages.put(nodeId, diskUsage);
                if (randomBoolean()) {
                    diskUsage = new DiskUsage(nodeId, null, diskUsage.getPath(), total, diskUsage.getFreeBytes());
                }
                mostUsages.put(nodeId, diskUsage);
                sumTotal += total;
                maxTotal = Math.max(total, maxTotal);
                expectedNodes.add(node);
            } else {
                long total1 = randomLongBetween(0, 1L << 40);
                leastUsages.put(nodeId, new DiskUsage(nodeId, null, randomAlphaOfLength(5), total1, randomLongBetween(0, total1)));
                long total2 = randomLongBetween(0, 1L << 40);
                mostUsages.put(nodeId, new DiskUsage(nodeId, null, randomAlphaOfLength(5), total2, randomLongBetween(0, total2)));
            }
        }
        state = ClusterState.builder(ClusterName.DEFAULT).nodes(nodes).build();
        info = new ClusterInfo(leastUsages, mostUsages, Map.of(), Map.of(), Map.of(), Map.of());
        context = new AutoscalingCalculateCapacityService.DefaultAutoscalingDeciderContext(