[AR-4622] Remove No-UI mode

[makylfang]

PR

Describe your changes

• Removed params from .init(), added to constructor params.
• theme is taken as a constructor param now.
• Removed NO-UI mode.
• Added alwaysShowWidget flag to constructor params to choose between Full and Widget mode, defaults to Full mode.
• Removed sentry dependency.
• Removed rollup polyfill packages from dependencies since they are not used now.
• Updated Error naming to be prefixed with Error... instead of postfix
• Updated usage.md

Issue ticket number and link

• AR-4622

Checklist before requesting a review

• You have performed a self-review of your own code
• You are using approved terminology
• Your changes have been tested locally
• Your code builds clean without any errors or warnings

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