jcheung824

Add pre-chat message activity HTML test and removed starterPromptCar…

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ADO issue: https://msazure.visualstudio.com/CCI/_workitems/edit/32481620/ ## Description * Design expectation of having no starter prompt during `blueprint` state. ## Design https://www.figma.com/design/r8dKrVWy43ZFAMUQir2AgD/RS-Agent-Builder?node-id=3062-48739&m=dev ## Specific Changes * Remove starter prompt card when the current...