Adds support for multi display type messages

[BernardGatt]

Addresses: INAPP-14008

This PR adds support for multi-step display types and state saving between message step changes.

Note: gist-web-renderer/pull/32 Needs to be deployed first

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Note

Adds multi-step display type support, persists step/display state across sessions, and reloads messages when display settings change.

• Core message flow:
  • Handle changeMessageStep events; detect display changes and visually reload messages without re-logging views.
  • Prevent duplicate renders by queueId; respect saved step when showing/embedding.
• State persistence:
  • Save/restore per-message step and display settings in local storage; clear on dismiss/remove.
• Renderer communication:
  • Pass SDK capabilities (MultiStepDisplayTypes) and optional stepId to iframe on load.
• Component loading:
  • loadOverlayComponent/loadEmbedComponent accept stepName; idempotent page element injection.
• Utilities:
  • New utilities/message-utils for message lookups, display-type detection, change checks, and applying display settings.
• Queue manager:
  • Restore saved state for persistent/show-always broadcasts before rendering.
• Public API cleanup:
  • Move fetchMessageByInstanceId to utilities; adjust imports.
• Settings:
  • Update dev renderer endpoint to code.gist.build/renderer/0.6.0-preview11.
• Examples:
  • Add "Show HTML Multistep Message" demo and encoded sample.

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