[BUG]: please provide an unbundled version of stackgl_modules

Description

I use a very minimal configuration consisting of just a few modules:

import * as Plotly from "plotly.js/lib/core.js";
import * as scatter from "plotly.js/lib/scatter";
import * as surface from "plotly.js/lib/surface";
Plotly.register([scatter, surface]);

the via node_modules/plotly.js/src/traces/surface/convert.js, line 3, this pulls in stackgl_modules:

var createSurface = require('../../../stackgl_modules').gl_surface3d;

As a result, the whole stackgl_modules/index.js file is pulled in, even though only a few parts are needed.

先檢查 src/traces/surface/convert.js 和所參照的 stackgl_modules/index.js，以追蹤為什麼匯入 surface trace 會載入整個模組。確定未打包的 stackgl_modules 介面範圍，使其保留最小的 Plotly 註冊範例，然後驗證其中只包含所要求的 surface 相依項。