TraceQL: Ints can't be compared to floats

[joe-elliott]

Currently ints can't be compared to floats. For instance this will never find a matching span:

{ span.floatAttr = 3 }

This may find a matching span:

{ span.floatAttr = 3. }

Tempo will never fully cast/coerce datatypes. This will never work:

{ span.floatAttr = "3" }

But I do think it would be useful for ints and floats to be comparable. Let's add support for searching float columns with int values and vice versa.

Similar to: #4046