[CHORE]: Remove Babel from `stackgl_modules` build process

[camdecoster]

Description

Remove Babel-related dependencies from the stackgl_modules build process.

Notes

• stackgl_modules is a pre-bundled vendor folder
• The stackgl_modules build process has used Babel to transpile the included dependencies to ES5 syntax
• plotly.js uses esbuild for bundling and that can handle the transpiling
• This was discovered in a recent dependabot PR (Bump the npm_and_yarn group across 2 directories with 2 updates #7846)

Scope

In stackgl_modules/webpack.config.js:

• Remove both babel-loader rules (the project-files rule is effectively a no-op without a babel config; the buffer/is-mobile rule is redundant with esbuild)
• Remove target: ['web', 'es5']

In stackgl_modules/package.json, drop the now-unused devDeps:

• @babel/core
• @babel/preset-env
• @babel/plugin-transform-modules-commonjs
• babel-loader

ify-loader (glslify) and raw-loader must stay — they handle the GLSL shader preprocessing that's the actual reason this pre-bundle exists.

Testing

• After removing the babel rules, run npm run bundle-stackgl
• Rebuild plotly.js and smoke-test 3D traces (scatter3d / mesh3d / surface) to confirm things still run/look the same

[archmoj]

The stackgl_modules folder was added in #6004 to continue supporting older versions of npm and node.js.
Now that supporting those versions are no longer needed, one could bring back stackgl dependencies from

plotly.js/stackgl_modules/package.json

Lines 11 to 46 in b633ef4

	"@plotly/point-cluster": "^3.1.9",
	"alpha-shape": "^1.0.0",
	"box-intersect": "plotly/box-intersect#v1.1.0",
	"convex-hull": "^1.0.3",
	"delaunay-triangulate": "^1.1.6",
	"gl-axes3d": "^1.7.1",
	"gl-cone3d": "^1.6.1",
	"gl-error3d": "^1.0.17",
	"gl-line3d": "^1.2.2",
	"gl-mesh3d": "^2.3.2",
	"gl-plot3d": "^2.4.7",
	"gl-scatter3d": "^1.4.1",
	"gl-shader": "4.3.1",
	"gl-spikes3d": "^1.0.11",
	"gl-streamtube3d": "^1.4.2",
	"gl-surface3d": "^1.6.2",
	"glslify": "^7.1.1",
	"incremental-convex-hull": "plotly/incremental-convex-hull#v1.1.0",
	"is-mobile": "^4.0.0",
	"matrix-camera-controller": "^2.1.4",
	"ndarray": "plotly/ndarray#v1.1.0",
	"ndarray-extract-contour": "plotly/ndarray-extract-contour#v1.1.0",
	"ndarray-gradient": "plotly/ndarray-gradient#v1.1.0",
	"ndarray-linear-interpolate": "^1.0.0",
	"ndarray-ops": "plotly/ndarray-ops#v1.3.0",
	"ndarray-pack": "plotly/ndarray-pack#v1.3.0",
	"ndarray-sort": "plotly/ndarray-sort#v1.1.0",
	"right-now": "^1.0.0",
	"robust-determinant": "plotly/robust-determinant#v1.2.2",
	"robust-in-sphere": "1.2.1",
	"robust-linear-solve": "plotly/robust-linear-solve#v1.1.2",
	"robust-orientation": "1.2.1",
	"simplicial-complex-contour": "plotly/simplicial-complex-contour#v1.1.0",
	"surface-nets": "plotly/surface-nets#v1.1.1",
	"vectorize-text": "3.2.2",
	"zero-crossings": "plotly/zero-crossings#v1.1.0"

into main package.json and use esbuild.

[jendrikw]

I think this would also fix #7654

[camdecoster]

Given @archmoj's comment, I think we'll handle this internally.