feat(ui): improve workflow elements scroll area

ui/src/utils/css.ts

@@ -0,0 +1,6 @@
+import { type ClassValue, clsx } from "clsx";
+import { twMerge } from "tailwind-merge";
+
+export const mergeCls = (...inputs: ClassValue[]) => {
+  return twMerge(clsx(inputs));
+};

ui/src/utils/error.ts

@@ -1,5 +1,9 @@
+import { ClientResponseError } from "pocketbase";
+
 export const getErrMsg = (error: unknown): string => {
-  if (error instanceof Error) {
+  if (error instanceof ClientResponseError) {
+    return error.response != null ? getErrMsg(error.response) : error.message;
+  } else if (error instanceof Error) {
     return error.message;
   } else if (typeof error === "object" && error != null) {
     if ("message" in error) {