fix(core): Make node execution order configurable, and backward-compatible (#6507)

* fix(core): Make node execution order configurable, and backward-compatible

* ⚡ Also add new Merge-Node behaviour

* ⚡ Fix typo

* Fix lint issue

* update labels

* rename legacy to v0

* remove the unnecessary log

* default all new workflows to use v1 execution-order

* remove the controller changes

* clone default settings to avoid it getting modified

---------

Co-authored-by: Jan Oberhauser <jan.oberhauser@gmail.com>

packages/editor-ui/src/plugins/i18n/locales/en.json

@@ -1595,6 +1595,7 @@
 	"workflowSettings.defaultTimezone": "Default - {defaultTimezoneValue}",
 	"workflowSettings.defaultTimezoneNotValid": "Default Timezone not valid",
 	"workflowSettings.errorWorkflow": "Error Workflow",
+	"workflowSettings.executionOrder": "Execution Order",
 	"workflowSettings.helpTexts.errorWorkflow": "A second workflow to run if the current one fails.<br />The second workflow should an 'Error Trigger' node.",
 	"workflowSettings.helpTexts.executionTimeout": "How long the workflow should wait before timing out",
 	"workflowSettings.helpTexts.executionTimeoutToggle": "Whether to cancel workflow execution after a defined time",