Describe the bug

I'm trying to add an m7i-flex.large instance to a managed node group per
createManagedComputeNodes( name, subnet, [ new ec2.InstanceType('m7i-flex.large'), ], eks.CapacityType.SPOT, );

But receive a Malformed instance type identifier when doing so.

Expected Behavior

I'm able to add the m7i-flex.large instance type as an instance choice for the managed node group

Current Behavior

Error: Malformed instance type identifier
    at InstanceType.sameInstanceClassAs (/node_modules/aws-cdk-lib/aws-ec2/lib/instance-types.js:1:17751)
    at /node_modules/aws-cdk-lib/aws-eks/lib/managed-nodegroup.js:1:7443
    at Array.some (<anonymous>)
    at isGpuInstanceType (/node_modules/aws-cdk-lib/aws-eks/lib/managed-nodegroup.js:1:7422)
    at typeToArch (/node_modules/aws-cdk-lib/aws-eks/lib/managed-nodegroup.js:1:8182)
    at Array.map (<anonymous>)
    at getPossibleAmiTypes (/node_modules/aws-cdk-lib/aws-eks/lib/managed-nodegroup.js:1:8442)
    at new Nodegroup (/node_modules/aws-cdk-lib/aws-eks/lib/managed-nodegroup.js:1:3543)
    at Cluster.addNodegroupCapacity (/node_modules/aws-cdk-lib/aws-eks/lib/cluster.js:1:19557)

Node.js v20.5.0

Reproduction Steps

Add a m7i-flex.large instance type to a managed node group per "Describe the bug". Then run cdk synthesize.

Possible Solution

No response

Additional Information/Context

No response

CDK CLI Version

2.101.1 (build 16ddad1)

Framework Version

No response

Node.js Version

20.5.0

OS

MAC OS Monterey 12.6.1

Language

TypeScript

Language Version

No response

Other information

No response