refactor(editor): Turn showMessage mixin to composable (#6081)

* refactor(editor): move $getExecutionError from showMessages mixin to pushConnection (it is used there only)

* refactor(editor): resolve showMessage mixin methods

* fix(editor): use composable instead of mixin

* fix(editor): resolve conflicts

* fix(editor): replace clearAllStickyNotifications

* fix(editor): replace confirmMessage

* fix(editor): replace confirmMessage

* fix(editor): replace confirmMessage

* fix(editor): remove last confirmMessage usage

* fix(editor): remove $prompt usage

* fix(editor): remove $show methods

* fix(editor): lint fix

* fix(editor): lint fix

* fix(editor): fixes after review

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

@@ -19,9 +19,9 @@
 <script lang="ts">
 import mixins from 'vue-typed-mixins';
 import { copyPaste } from '@/mixins/copyPaste';
-import { showMessage } from '@/mixins/showMessage';
+import { useToast } from '@/composables';
 
-export default mixins(copyPaste, showMessage).extend({
+export default mixins(copyPaste).extend({
 	props: {
 		label: {
 			type: String,
@@ -56,12 +56,17 @@ export default mixins(copyPaste, showMessage).extend({
 			default: 'large',
 		},
 	},
+	setup() {
+		return {
+			...useToast(),
+		};
+	},
 	methods: {
 		copy(): void {
 			this.$emit('copy');
 			this.copyToClipboard(this.value);
 
-			this.$showMessage({
+			this.showMessage({
 				title: this.toastTitle,
 				message: this.toastMessage,
 				type: 'success',