fix: Use @denops/std/helper/getbufinfo instead

The getbufinfo function in @denops/std/function will raise an error when
there's a funcref in buffer-local variables, and we should switch to the
alternative getbufinfo function provided by @denops/std/helper/getbufinfo.

Author: mityu

builtin/source/buffer.ts

@@ -1,5 +1,6 @@
 import { unreachable } from "@core/errorutil/unreachable";
 import * as fn from "@denops/std/function";
+import { getbufinfo } from "@denops/std/helper/getbufinfo";
 
 import { defineSource, type Source } from "../../source.ts";
 
@@ -44,7 +45,7 @@ type Filter = "buflisted" | "bufloaded" | "bufmodified";
 export function buffer(options: Readonly<BufferOptions> = {}): Source<Detail> {
   const filter = options.filter;
   return defineSource(async function* (denops, _params, { signal }) {
-    const bufinfo = await fn.getbufinfo(denops);
+    const bufinfo = await getbufinfo(denops);
     signal?.throwIfAborted();
 
     // Filter and map buffers based on the provided filter option

builtin/source/line.ts

@@ -1,4 +1,5 @@
 import * as fn from "@denops/std/function";
+import { getbufinfo } from "@denops/std/helper/getbufinfo";
 
 import { defineSource, type Source } from "../../source.ts";
 
@@ -50,7 +51,7 @@ export function line(options: LineOptions = {}): Source<Detail> {
     const expr = args[0] ?? "%"; // Defaults to the current buffer if no argument is provided.
     await fn.bufload(denops, expr); // Ensure the buffer is loaded.
     signal?.throwIfAborted();
-    const bufinfos = await fn.getbufinfo(denops, expr); // Retrieve buffer information.
+    const bufinfos = await getbufinfo(denops, expr); // Retrieve buffer information.
     signal?.throwIfAborted();
     const bufinfo = bufinfos[0];