feat(no-ref-as-operand): report refs detected by type information - #3144

Closes #2519

Following the suggestion in the issue, the rule now also uses type information when it's available. If a variable isn't created by ref() and friends in the same file but its type is a ref, it gets reported as well, so const ok = useOk(); ok ? 'yes' : 'no' is caught when useOk returns Ref<boolean>.

A value counts as a ref when its type has the RefSymbol marker, which covers Ref, ShallowRef, ComputedRef and the rest, while MaybeRef isn't reported. Plain = assignment is left out since assigning another ref there is valid. Without type information nothing changes.