Installing Helm v3 Chart resource causes errors

[scottslowe]

What happened?

I was trying to use/update the kubernetes-go-helm-wordpress example with the Kubernetes v4 provider. I kept getting this error:

error: an unhandled error occurred: program exited with non-zero exit code: 2

    panic: interface conversion: interface {} is nil, not *v1.Service
    goroutine 119 [running]:
    main.main.func1.1({0x0?, 0x0?})
    	/Users/slowe/Work/Code/testarea/main.go:24 +0x5c

Through additional testing, @rquitales verified that this is broken if the chart is installed into the "default" namespace, and is broken in preview for all namespaces.

Example

1. Stand up a Kubernetes cluster and obtain the Kubeconfig.
2. Clone or copy down the kubernetes-go-helm-wordpress example with the Kubernetes v4 provider.
3. With the Kubeconfig from step 1 active, run pulumi up. It should error during preview.

Output of pulumi about

CLI
Version      3.88.0
Go Version   go1.21.2
Go Compiler  gc

Plugins
NAME    VERSION
aws     6.5.0
awsx    2.0.2
docker  4.4.3
go      unknown

Host
OS       darwin
Version  13.5.2
Arch     arm64

Additional context

No response

Contributing

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[rquitales]

We omit the namespace if it's default in the GetResource function:

pulumi-kubernetes/provider/pkg/gen/_go-templates/helm/v3/chart.go

Lines 351 to 353 in f3498a9

	if len(namespace) > 0 && namespace != "default" {
	id = fmt.Sprintf("%s/%s", namespace, name)
	}

We always need to include the namespace in generating the key. We should also double check the implementation for ConfigFile resources, and ensure it works as expected too!