* Add overleaf assist paywall modal component in storybook
* update img alt
* remove data-action
* rename assistant -> assist
* use css var for blue color
* Open Overleaf assist paywall if in "overleaf-assist-bundle" split-test
* dont use optional planCode
* Open overleaf assist paywal via event listener
* rename to mainEditorLayoutModals
* call setAssistantUpgraded when modal is shown
* fix merge mistake
* fix lint error
* fix merge differences
GitOrigin-RevId: 0b3162a5c241d4dbe2773ae773c3e35f02c5c492