### 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.
UnaryOpNode *operation = alloc_node<UnaryOpNode>();
	reset_extents(operation, p_previous_operand);
	update_extents(operation);
	consume(GDScriptTokenizer::Token::IN, R"(Expected "in" after "not" in content-test operator.)");
	ExpressionNode *in_operation = parse_binary_operator(p_previous_operand, p_can_assign);
	operation->operation = UnaryOpNode::OP_LOGIC_NOT;
	operation->variant_op = Variant::OP_NOT;
	operation->operand = in_operation;
	complete_extents(operation);
	return operation;
}
GDScriptParser::ExpressionNode *GDScriptParser::parse_binary_operator(ExpressionNode *p_previous_operand, bool p_can_assign) {
	GDScriptTokenizer::Token op = previous;
	BinaryOpNode *operation = alloc_node<BinaryOpNode>();
	reset_extents(operation, p_previous_operand);
	update_extents(operation);
	Precedence precedence = (Precedence)(get_rule(op.type)->precedence + 1);
	operation->left_operand = p_previous_operand;
	operation->right_operand = parse_precedence(precedence, false);
	complete_extents(operation);
	if (operation->right_operand == nullptr) {
		push_error(vformat(R"(Expected expression after "%s" operator.")", op.get_name()));
	}
	
	switch (op.type) {
		case GDScriptTokenizer::Token::PLUS: