* feat(design-system): button as square shape
* refactor(editor-ui): drop n8n-square-button in favor of n8n-button
* refactor(design-system): remove obsolete n8n-square-button
* fix(design-system): icon only square button icon position
* fix(design-system): icon only square button icon position
* chore(design-system): update button test snapshot
* fix(design-system): overriding default square button styles
* fix(editor-ui): using tertiary button variant in survey without local style overrides
* refactor(design-system): simplifying and partially merging icon-button and button
* fix(design-system): remove unused prop from icon-button
* fix(design-system): square button should have the old dimensions
* fix(design-system): square button update test snapshots