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/plugins/i18n/locales/en.json

@@ -1821,5 +1821,7 @@
 	"userActivationSurveyModal.sharedFeedback.success": "Thanks for your feedback",
 	"userActivationSurveyModal.sharedFeedback.error": "Problem sharing feedback, try again",
 	"sso.login.divider": "or",
-	"sso.login.button": "Continue with SSO"
+	"sso.login.button": "Continue with SSO",
+	"pushConnection.executionError": "There was a problem executing the workflow{error}",
+	"pushConnection.executionError.details": "<br /><strong>{details}</strong>"
 }