### 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
```
ERR_FAIL_COND_V_MSG(!valid_annotations.has(p_annotation->name), false, vformat(R"(Annotation "%s" not found to validate.)", p_annotation->name));
	const MethodInfo &info = valid_annotations[p_annotation->name].info;
	if (((info.flags & METHOD_FLAG_VARARG) == 0) && p_annotation->arguments.size() > info.arguments.size()) {
		push_error(vformat(R"(Annotation "%s" requires at most %d arguments, but %d were given.)", p_annotation->name, info.arguments.size(), p_annotation->arguments.size()));
		return false;
	}
	if (p_annotation->arguments.size() < info.arguments.size() - info.default_arguments.size()) {
		push_error(vformat(R"(Annotation "%s" requires at least %d arguments, but %d were given.)", p_annotation->name, info.arguments.size() - info.default_arguments.size(), p_annotation->arguments.size()));
		return false;
	}
	
	if (p_annotation->name == SNAME("@icon")) {
		ExpressionNode *argument = p_annotation->arguments[0];
		if (argument->type != Node::LITERAL) {
			push_error(R"(Argument 1 of annotation "@icon" must be a string literal.)", argument);
			return false;
		}
		Variant value = static_cast<LiteralNode *>(argument)->value;
		if (value.get_type() != Variant::STRING) {
			push_error(R"(Argument 1 of annotation "@icon" must be a string literal.)", argument);
			return false;
		}
		p_annotation->resolved_arguments.push_back(value);
	}
	
	return true;
}
bool GDScriptParser::tool_annotation(const AnnotationNode *p_annotation, Node *p_node) {