Fix @GlobalScope and @GDScript at the bottom of the list

[Mickeon]

Fix #63799

Shuffles the documentation generation around so that @GlobalScope and script language built-ins are generated before anything else.

[mhilbrunner]

cc @YuriSizov - looks like a simple change and makes sense, although I wonder if the order of generation should be what decides this at all. Probably? Maybe we could also sort alphabetically, not sure, but us having more control over this may be nice, I guess.

[Mickeon]

Honestly a personal peeve that I could've also done, in retrospective, is the fact that the function is one giant block instead of being split into multiple helper functions, which makes much more difficult to read.

[YuriSizov]

although I wonder if the order of generation should be what decides this at all.

Indeed, it shouldn't. So as a solution to the problem presented, this is not a proper one. Beyond that I can't say at the moment what it'd affect, as I am not available.

[mhilbrunner]

PR review meeting: we should just sort the displayed order alphabetically instead, so this no longer depends on the order its generated in

[YuriSizov]

For the record, I'm working on these sorting improvements, but it's not so trivial and there are a few additional changes required to implement it proper, so no PR yet.

[AThousandShips]

Superseded by:

• Add inheriting classes to DocTools #77554

Thank you nonetheless!

[Mickeon]

I will never financially recover from this burden