No error thrown if invalid type provided, silently falls back to `scatter`

If you enter a type for a trace that is not supported in the package you have, Plotly simply falls back to scatter plot. This is incorrect, an error should be thrown to indicate the user entered an invalid type.

In my particular case, I had been using scattergl type with the full plotly.js-dist bundle, then when I switched our project over to plotly.js-finance (https://github.com/plotly/plotly.js/blob/master/dist/README.md#plotlyjs-finance) I thought everything was working correctly as all our test charts appeared correctly. However, I didn't notice plotly.js-finance did not include scattergl, so was in fact falling back to scatter, which had a significant performance penalty I did not notice while testing. I would have much appreciated an error indicating the type I was providing was not available in the partial bundle I was using.

I've made a code pen of the issue here, using a type "aninvalidtype": https://codepen.io/mofojed/pen/pojpVvP

从使用 "aninvalidtype" 的链接 CodePen 复现开始，比较完整的 plotly.js-dist bundle 与 plotly.js-finance 之间的行为，尤其关注不可用的 scattergl 类型。跟踪所选 trace 类型在 package 入口点中是如何解析的。完成标准是：不支持的类型会产生错误，而不是被静默地渲染为 scatter，并且为部分 bundle 提供回归覆盖。