refactor(core): Convert dynamic node-parameter routes to a decorated controller (no-changelog) (#7284)

1. Reduce a lot of code duplication
2. Move more endpoints out of `Server.ts`
3. Move all query-param parsing and validation into a middleware to make
the route handlers simpler.

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

@@ -166,7 +166,6 @@ import stringify from 'fast-json-stable-stringify';
 import type { EventBus } from 'n8n-design-system/utils';
 import { createEventBus } from 'n8n-design-system/utils';
 import type {
-	ILoadOptions,
 	INode,
 	INodeCredentials,
 	INodeListSearchItems,
@@ -688,9 +687,6 @@ export default defineComponent({
 				const loadOptionsMethod = this.getPropertyArgument(this.currentMode, 'searchListMethod') as
 					| string
 					| undefined;
-				const searchList = this.getPropertyArgument(this.currentMode, 'searchList') as
-					| ILoadOptions
-					| undefined;
 
 				const requestParams: IResourceLocatorReqParams = {
 					nodeTypeAndVersion: {
@@ -699,7 +695,6 @@ export default defineComponent({
 					},
 					path: this.path,
 					methodName: loadOptionsMethod,
-					searchList,
 					currentNodeParameters: resolvedNodeParameters,
 					credentials: this.node.credentials,
 					...(params.filter ? { filter: params.filter } : {}),