For `eks.NodeGroupLaunchTemplate.version`, type 'number' is not assignable to type 'string'

[aureq]

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Issue details

When creating a new managed node group, there's a property named launchTemplate used to specific a specific EC2 launch template. eks.NodeGroupLaunchTemplate.version is of type Input<string> accepts "$Latest" (Ok).

However, eks.NodeGroupLaunchTemplate.version is not able to access aws.ec2.LaunchTemplate.(defaultVersion|latestVersion) as recommended in the documentation because the ec2 launch properties mentioned are of type pulumi.OutputInstance<number>. Yet, our documentation recommends using these properties rather than the string equivalent.

This works

	launchTemplate: {
		id: launchTemplate.id,
		version: '$Latest'
	}

This doesn't work

	launchTemplate: {
		id: launchTemplate.id,
		version: launchTemplate.latestVersion
	}

Steps to reproduce

1. Use https://github.com/pulumi/pulumi-eks/tree/master/examples/managed-nodegroups as a starting point
2. Add a new launch template

const launchTemplate = new aws.ec2.LaunchTemplate("my-launch-template", {
    tags: {testTag: "tag value"},
});

3. Observe in vscode the syntax linting for the code provided in the issue detail.

Expected: launchTemplate.version is able to access aws.ec2.LaunchTemplate.latestVersion and aws.ec2.LaunchTemplate.defaultVersion Actual: Error ts2322 type 'number' is not assignable to type 'string' is shown in the IDE.

[con5cience]

latestVersion is an Output, so you need to interpolate it:

version: pulumi.interpolate`${launchTemplate.latestVersion}`

This works for me in assorted implementations.

More context:

• https://www.pulumi.com/registry/packages/aws/api-docs/ec2/launchtemplate/#outputs
• https://www.pulumi.com/docs/intro/concepts/inputs-outputs/#outputs-and-strings

There are some notes somewhere somewhere around here that recommend not using '$Latest' because the AWS API will this as 1 and parse it as drift every time, causing Pulumi to smoosh-replace it.