handle LABEU env

[rjamet-ovh]

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• Yes, I have contact the help centre.

Describe the problem

LABEU is missing from the region information provided in the shell.

  const { environment } = useShellContext();
  const region = environment.getRegion(); // region: Region

packages/manager/modules/config/src/environment/region.enum.ts

export enum Region {
  US = 'US',
  CA = 'CA',
  EU = 'EU',
}

This issue prevents the manager from working properly in the LABEU environment.

Describe the solution

To resolve this, we need a way to determine if we are currently in the LABEU environment.

Describe alternatives you've considered

No response

Additional context

No response