### 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
```
ForNode *n_for = alloc_node<ForNode>();
	if (consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected loop variable name after "for".)")) {
		n_for->variable = parse_identifier();
	}
	consume(GDScriptTokenizer::Token::IN, R"(Expected "in" after "for" variable name.)");
	n_for->list = parse_expression(false);
	if (!n_for->list) {
		push_error(R"(Expected iterable after "in".)");
	}
	consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after "for" condition.)");
	
	bool could_break = can_break;
	bool could_continue = can_continue;
	
	can_break = true;
	can_continue = true;
	SuiteNode *suite = alloc_node<SuiteNode>();
	if (n_for->variable) {
		const SuiteNode::Local &local = current_suite->get_local(n_for->variable->name);
		if (local.type != SuiteNode::Local::UNDEFINED) {
			push_error(vformat(R"(There is already a %s named "%s" declared in this scope.)", local.get_name(), n_for->variable->name), n_for->variable);
		}
		suite->add_local(SuiteNode::Local(n_for->variable, current_function));
	}
	suite->is_in_loop = true;
	n_for->loop = parse_suite(R"("for" block)", suite);