Fix incorrect line reporting for mixed indentation errors

[vixxi77]

Fixes #118004

Tokenizer did append correct error data to the token, but the parser ignored the errors location and only forwarded the error message. As a result the reported line would come from the parsers current location rather than the location of the actual error.

This change adds a push_error(const GDScriptTokenizer::Token &p_token) overload function, without touching the old API, allowing for the full use of the error tokens data.

Also tested:

• Mixed indentation inside functions, if blocks, and lambdas.
• Standard parser errors still report correct locations.

Steps to reproduce

1. Create a new project and a script.
2. Add this code to the script:

gdscript
func foo() -> int:
	var bar: int = 2 # Tab  <- Error shown here
    return bar # 4 spaces   <- But should be here

Screenshots

Before:

After:

[dalexeev]

Looks good to me. 👍