GDScript.reload() for GDScript which only sets the [source code that contains inner classes] no longer works after 4.0.Beta9

[Xwdit]

Godot version

4.0.beta10

System information

Windows 11

Issue description

UPDATE: This problem only occurs when the source code contains inner classes

Before 4.0.Beta9, I could get a GDScript instance by GDScript.new() and then set the source_code property and then reload(), but now it throws an error

USER SCRIPT ERROR: Parse Error: Could not find script "".
   at: GDScript::reload (built-in:1644)

In my software, I use the above method when the user modifies the code text, and then read the godot log to implement real-time error checking of the custom user script editor. But now this functionality is completely broken

Steps to reproduce

1. Create a GDScript instance by GDScript.new()
2. set the source_code property and then reload()

Minimal reproduction project

N/A

[akien-mga]

CC @adamscott @rune-scape

[adamscott]

Could not reproduce on master (f382a2b)

@Xwdit Please add a minimal reproduction project to the issue.

[Xwdit]

UPDATE: This problem only occurs when the source code contains inner classes

[adamscott]

This is a regression coming from #69471. The analyzer tries to resolve the script using it's path, but as it's a runtime script, it has no script path.