[Microsoft.App] Update the error shown on ConsumptionOnly env creation

[jepetty]

This is a small change to make the error message clearer for users when they try to create a ConsumptionOnly environment but an existing WorkloadProfiles environment with the same name already exists. The previous error was "At least 1 workload profile must be specified" - very confusing

Related command

az containerapp env create --name --resource-group --enable-workload-profiles false

General Guidelines

• Have you run azdev style <YOUR_EXT> locally? (pip install azdev required)
• Have you run python scripts/ci/test_index.py -q locally? (pip install wheel==0.30.0 required)
• My extension version conforms to the Extension version schema

[azure-client-tools-bot-prd]

️✔️Azure CLI Extensions Breaking Change Test

️✔️Non Breaking Changes

[azure-client-tools-bot-prd]

Hi @jepetty,
Please write the description of changes which can be perceived by customers into HISTORY.rst.
If you want to release a new extension version, please update the version in setup.py as well.

[yonzhan]

Thank you for your contribution! We will review the pull request and get back to you soon.

[github-actions]

The git hooks are available for azure-cli and azure-cli-extensions repos. They could help you run required checks before creating the PR.

Please sync the latest code with latest dev branch (for azure-cli) or main branch (for azure-cli-extensions).
After that please run the following commands to enable git hooks:

pip install azdev --upgrade
azdev setup -c <your azure-cli repo path> -r <your azure-cli-extensions repo path>

[github-actions]

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[github-actions]

Hi @jepetty

Release Suggestions

Module: containerapp

• Please log updates into to src/containerapp/HISTORY.rst
• Update VERSION to 1.3.0b2 in src/containerapp/setup.py

Notes

• For more info about extension versioning, please refer to Extension version schema

[Copilot]

Pull request overview

This PR improves the error message shown when users attempt to create a Consumption-Only environment with a name that's already in use by an existing WorkloadProfiles environment. The previous error message was confusing ("At least 1 workload profile must be specified"), but the new message clearly states that the existing environment uses workload profiles and suggests creating a new environment.

Changes:

• Refactored the set_up_workload_profiles method to check for existing environment before branching on the enable_workload_profiles flag
• Added a new validation in the else branch to raise a clearer error when attempting to create a Consumption-Only environment with a name that's already used by a WorkloadProfiles environment

[Greedygre]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[Greedygre]

The CI might be failed due to the az identity api-version upgrade in azure-cli, generally they didn't update azure-cli-extension related tests.
I will create a separate pr update the tests.