roachtest: cluster_creation failed

roachtest.cluster_creation [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAwsBazel/19890904?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_RoachtestNightlyAwsBazel/19890904?buildTab=artifacts#/kv0/enc=true/nodes=3) on release-25.1.8-rc @ [a411051498078c6fcd67324301b983a962036208](https://github.com/cockroachdb/cockroach/commits/a411051498078c6fcd67324301b983a962036208):

```
test kv0/enc=true/nodes=3 failed: (test_runner.go:823).func4: in provider: aws: failed to run: aws ec2 run-instances --associate-public-ip-address --count 1 --instance-type m6id.2xlarge --image-id ami-0e83be366243f524a --key-name teamcity-runner-z-YmIpQ14R8goe0-KCNFtAYGOds= --region us-east-2 --security-group-ids sg-04d72b57e29d671f1 --subnet-id subnet-0258dc9d1b6473d84 --tag-specifications ResourceType=instance,Tags=[{Key=usage,Value=roachtest},{Key=Name,Value=teamcity-19890904-1749533755-25-n4cpu8-0002},{Key=Spot,Value=true},{Key=Roachprod,Value=true},{Key=Cluster,Value=teamcity-19890904-1749533755-25-n4cpu8},{Key=Lifetime,Value=12h0m0s},{Key=arch,Value=amd64},{Key=Created,Value=2025-06-10T06:05:35Z}] ResourceType=volume,Tags=[{Key=usage,Value=roachtest},{Key=Name,Value=teamcity-19890904-1749533755-25-n4cpu8-0002},{Key=Spot,Value=true},{Key=Roachprod,Value=true},{Key=Cluster,Value=teamcity-19890904-1749533755-25-n4cpu8},{Key=Lifetime,Value=12h0m0s},{Key=arch,Value=amd64},{Key=Created,Value=2025-06-10T06:05:35Z}] --user-data file:///tmp/aws-startup-script2301879933 --iam-instance-profile Name=roachprod-testing --block-device-mapping file:///tmp/aws-block-device-mapping1889451028 --instance-market-options MarketType=spot,SpotOptions={SpotInstanceType=one-time,InstanceInterruptionBehavior=terminate} --output json: stderr:
An error occurred (InsufficientInstanceCapacity) when calling the RunInstances operation (reached max retries: 2): There is no Spot capacity available that matches your request.: exit status 254 [owner=test-eng]
```

Parameters:
- cloud=aws
- coverageBuild=false
- cpu=8
- runtimeAssertionsBuild=false
- ssd=0
Help

See: [roachtest README](https://github.com/cockroachdb/cockroach/blob/master/pkg/cmd/roachtest/README.md)

See: [How To Investigate \(internal\)](https://cockroachlabs.atlassian.net/l/c/SSSBr8c7)

Same failure on other branches

- #148059 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-24.3.15-rc]
- #147898 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #147897 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #147896 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #147895 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #147894 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #147893 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #147892 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #147891 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]
- #147530 roachtest: cluster_creation failed [O-roachtest O-robot T-testeng X-infra-flake branch-master]

/cc @cockroachdb/test-eng

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Jira issue: CRDB-51373