refactor(design-system): merge n8n square button into n8n button (#4075)

* 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

packages/editor-ui/src/components/ValueSurvey.vue

@@ -19,9 +19,11 @@
 				<div v-if="showButtons" :class="$style.wrapper">
 					<div :class="$style.buttons">
 						<div v-for="value in 11" :key="value - 1" :class="$style.container">
-							<n8n-square-button
+							<n8n-button
+								type="tertiary"
 								:label="(value - 1).toString()"
 								@click="selectSurveyValue((value - 1).toString())"
+								square
 							/>
 						</div>
 					</div>