Clarify type-safety of as

[Lexyth]

Changed the statement about the as keyword's type-safety to clarify that it is less type-safe than type hints.

[dalexeev]

I find your correction useful in a practical sense, but imprecise in terminology.

Type safety means a guarantee that you won't get a type error at runtime. The as operator is more type safe, but also more error-prone.

The problem is that objects are nullable, null safety is not guaranteed by the current type system for objects.

[Lexyth]

I find your correction useful in a practical sense, but imprecise in terminology.

Type safety means a guarantee that you won't get a type error at runtime. The as operator is more type safe, but also more error-prone.

The problem is that objects are nullable, null safety is not guaranteed by the current type system for objects.

I agree. I have edited it to clarify that: "[...] more :ref:type-safe<doc_gdscript_static_typing_safe_lines> than type hints, but also less null-safe [...]"