### Godot version

Godot 4.0.1.stable

### System information

Windows 10, Forward+

### Issue description

Example code:

```gdscript
@warning_ignore("shadowed_global_identifier")
static func print_debug(msg: String):
```

the warning is ignored by pressing [ignore] in the warnings panel.

pressing it multiple times results in:
```gdscript
@warning_ignore("shadowed_global_identifier", "shadowed_global_identifier")
```


### Steps to reproduce

Shadowing a global function with a method of script:

```gdscript
@warning_ignore("shadowed_global_identifier")
static func print_debug(msg: String):
```


### Minimal reproduction project

```gdscript
@warning_ignore("shadowed_global_identifier")
static func print_debug(msg: String):
    pass
```
parse_class_name();
				}
				break;
			case GDScriptTokenizer::Token::EXTENDS:
				advance();
				if (head->extends_used) {
					push_error(R"("extends" can only be used once.)");
				} else {
					parse_extends();
					end_statement("superclass");
				}
				break;
			case GDScriptTokenizer::Token::LITERAL:
				if (current.literal.get_type() == Variant::STRING) {
					
					advance();
					if (!match(GDScriptTokenizer::Token::NEWLINE)) {
						push_error("Expected newline after comment string.");
					}
					break;
				}
				[[fallthrough]];
			default:
				
				can_have_class_or_extends = false;
				break;
		}
		if (panic_mode) {
			synchronize();
		}