### Godot version

v4.0.beta13.official [caacade56]

### System information

Windows 8.1

### Issue description

The `Unreachable code (statement after return) in function 'function_name()'` warning is given for functions that do not have unreachable code. The same code does not give this warning in v3.5.stable.official [991bb6ac7].

### Steps to reproduce

```
func warning(i: int) -> void:
  if i == 0:
    pass
  elif i == 1:
    return
  else:
    return
  print("yeah")
```

Removing either the `elif` or the `else` removes the warning.

### Minimal reproduction project

N/A; code in reproduction steps can be placed in any blank gdscript file to trigger the error.
switch (p_statement->type) {
		case Node::ASSERT:
			print_assert(static_cast<AssertNode *>(p_statement));
			break;
		case Node::VARIABLE:
			print_variable(static_cast<VariableNode *>(p_statement));
			break;
		case Node::CONSTANT:
			print_constant(static_cast<ConstantNode *>(p_statement));
			break;
		case Node::IF:
			print_if(static_cast<IfNode *>(p_statement));
			break;
		case Node::FOR:
			print_for(static_cast<ForNode *>(p_statement));
			break;
		case Node::WHILE:
			print_while(static_cast<WhileNode *>(p_statement));
			break;
		case Node::MATCH:
			print_match(static_cast<MatchNode *>(p_statement));