refactor(editor): Fix NodeView/Canvas related TS errors (#9581)

Signed-off-by: Oleg Ivaniv <me@olegivaniv.com>

packages/editor-ui/src/jsplumb.d.ts

@@ -0,0 +1,34 @@
+import type { Connection, Endpoint, EndpointRepresentation, AbstractConnector, Overlay } from '@jsplumb/core';
+import type { NodeConnectionType } from 'n8n-workflow';
+
+declare module '@jsplumb/core' {
+	interface EndpointRepresentation {
+		canvas: HTMLElement;
+		scope: NodeConnectionType;
+	}
+	interface AbstractConnector {
+		canvas: HTMLElement;
+		overrideTargetEndpoint: Endpoint;
+	}
+	interface Overlay {
+		canvas: HTMLElement;
+	}
+	interface Connection {
+		__meta: {
+			sourceOutputIndex: number;
+			targetNodeName: string;
+			targetOutputIndex: number;
+			sourceNodeName: string;
+		};
+	}
+	interface Endpoint {
+		scope: NodeConnectionType;
+		__meta: {
+			nodeName: string;
+			nodeId: string;
+			index: number;
+			totalEndpoints: number;
+			endpointLabelLength: number;
+		};
+	};
+}