Fix an error when dragging nodes into built-in scripts because script does not inherit Node

[jsjtxietian]

Fixes #81294
Reload built_in script after create to allow drag nodes into it. Calling reload can compile the script and give it the inheritance info, thus can pass the check in drop_data_fw.

[akien-mga]

Reload built_in script after create to allow drag nodes into it. Calling reload can compile the script and give it the inheritance info, thus can pass the check in drop_data_fw.

This probably warrants a comment in the code, as it's not obvious why a script that has just been created would need to be reloaded. I also wonder if it's the right location for it or if it should be done after receiving script_created?

[jsjtxietian]

I also wonder if it's the right location for it or if it should be done after receiving script_created

As far as I can see, for no built_in scripts, it will get reloaded and compiled in Error err = ResourceSaver::save(scr, lpath, ResourceSaver::FLAG_CHANGE_PATH), rightly after it is created. But there might be other reasons why we can't do the same for built_in scripts that I do not know.

[KoBeWi]

The comment might need rewording (not sure about template; also instead of specifically referring to dropping nodes I think it should say that it makes type recognizable or something), but I can confirm this change fixes the issue.

I checked when external script are reloaded and it happens on save as you noted, but only when auto_reload_and_parse_scripts_on_save editor setting is enabled. Otherwise the script will be reloaded when generating preview 🙃 (which also happens right after saving)

So I think this is a correct place to reload the script. Although it's weird that it isn't done automatically somewhere (in script editor maybe).

[jsjtxietian]

The comment might need rewording.

I will update it soon.

[YuriSizov]

Thanks!