### 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.
case BinaryOpNode::OP_DIVISION:
			push_text(" / ");
			break;
		case BinaryOpNode::OP_MODULO:
			push_text(" % ");
			break;
		case BinaryOpNode::OP_POWER:
			push_text(" ** ");
			break;
		case BinaryOpNode::OP_BIT_LEFT_SHIFT:
			push_text(" << ");
			break;
		case BinaryOpNode::OP_BIT_RIGHT_SHIFT:
			push_text(" >> ");
			break;
		case BinaryOpNode::OP_BIT_AND:
			push_text(" & ");
			break;
		case BinaryOpNode::OP_BIT_OR:
			push_text(" | ");
			break;
		case BinaryOpNode::OP_BIT_XOR:
			push_text(" ^ ");
			break;
		case BinaryOpNode::OP_LOGIC_AND:
			push_text(" AND ");
			break;
		case BinaryOpNode::OP_LOGIC_OR:
			push_text(" OR ");
			break;