feat: support switch panel from extensions

[sharanyavinod]

Description

• Allow switching the active tool panel from extensions, or from the canvas/chat

Related Issue

Motivation and Context

Certain actions might need the user to be directed to a specific panel - this could be from an extension, from an action within the canvas, or based on specific chat interactions. This PR introduces support to switch the active panel programmatically based on the panel name.
Extended existing code for setting panel based on picker,user session -> this merely exposes the logic to be usable on demand.

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• 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 change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

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Commits

• 644d147 ✅ (latest)
• d5393c1 ✅