[JavaScript/TypeScript Language Hints] Hide default `Function` properties/methods until manually typed just like in Rust.

Right now if I create a class with static methods/properties or via namespace, it's very hard to distinguish between default and custom ones visually.

I propose to hide those default methods, they are not useful to know for beginners, while for experienced ones, it's noisy. Leaving only defined in classes/namespaces.
I'm looking from Rust lang analyzer extension perspective, which does exactly that, and I feel like it's much more convenient, especially if there will be more properties/methods in future.
If the property is fully typed correctly, e.g. Test.call, the hint will appear just like typing Test.constructor, it's not appearing, but when typed - the hint appears with Function.

This can be an option to enable/disable.

首先复现 issue 中描述的类和命名空间补全示例，然后将当前的 TypeScript 语言提示与 Rust analyzer 的行为进行比较。完成的标准是：默认的 Function 成员在被显式指定类型之前处于隐藏状态，同时自定义成员保持可见，并考虑提供启用/禁用选项。