Description of problem:

When configuring Dev Spaces to disable automatic workspace Service Account creation, the DevWorkspace Controller can crash if the manually created Service Account cannot be found by the operator.

Workaround: Add label controller.devfile.io/devworkspace_id: "true" to any manually created workspace Service Accounts.

Prerequisites (if any, like setup, operators/versions):

1. Install Dev Spaces

Steps to Reproduce

1. Configure CheCluster to disable automatic service account creation by setting .config.workspace.serviceAccount.disableCreation: true
2. Start a workspace
3. Controller pod restarts with

{{{"level":"info","ts":"2023-06-29T23:41:33Z","msg":"Observed a panic in reconciler: runtime error: invalid memory address or nil pointer dereference","controller":"devworkspace","controllerGroup":"workspace.devfile.io","controllerKind":"DevWorkspace","DevWorkspace":

,"namespace":"openshift-operators","name":"plain-devworkspace","reconcileID":"79d7c3d5-7edd-4833-bcac-173058865601"}
}}

 h3. Reproducibility (Always/Intermittent/Only Once): Always

Acceptance criteria: 

Definition of Done:

Build Details:

Additional info (Such as Logs, Screenshots, etc):

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