Scalar * Tensor operations fails

### Description

```python
import pytensor.scalar as ps
import pytensor.tensor as pt

a = ps.float64("a")
b = pt.vector("b")

b * a  # Fine
a * b  # TypeError: TypeError: Cannot convert b to a scalar type
```

It tries to convert `b` to a scalar, which fails. When it fails, it should try to multiply b * a, which works