Pass azureContext to DeployWizard to enable Azure Workload Identity Step

[tejhan]

Description

Currently our WorkloadIdentityStep is gated by the presence of azureContext, and it appears we aren't passing that into the DeployWizard, thus it's always disabled.

This PR gets and passes the azureContext into DeployWizard via DeployButton, which re-enables this option & provides the context for it's operations.

Fixes issue:

• [BUG] Unable to toggle on Workload Identity #617

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Performance improvement
• Code refactoring
• CI/CD changes
• Other: **___**

Related Issues

Closes #617

Changes Made

• Added azureContext, fetched via useAzureContext
• Added isManagedNamespace & azureRbacenabled, fetched via useNamespaceCapabilities
• Passed new azureContext, isManagedNamespace & azureRbacenabled into DeployWizard (to satisfy DeployAzureContext interface)
• Added azureContextError to surface detailed errors if caught

Testing

• Unit tests pass
• Integration tests pass
• Manual testing completed
• Performance tested (if applicable)
• Accessibility tested (if applicable)

Test Cases

Manual Testing:

1. Click 'Deploy Application`
2. Navigate to the Workload Identity Step
3. Observe that the step is now enabled & interactable.

[Copilot]

Pull request overview

This PR wires Azure deployment context into the project-header DeployButton so the Deploy Wizard can enable the Workload Identity step for Azure-backed deployments, addressing issue #617 in the deploy flow.

Changes:

• Fetches Azure context from the selected project cluster in DeployButton.
• Fetches namespace capability metadata (isManagedNamespace, azureRbacEnabled) for the selected project namespace.
• Passes the assembled Azure context into DeployWizard so workload identity setup has the data it needs.

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