`inline val` for `opaque type` alias for literal type is 'declared as erased, but is in fact used'

[armanbilge]

Compiler version

3.1.1-RC1

Minimized code

// This works:
inline val `1`: 1 = 1
def get1: 1 = `1`

// But this doesn't:
opaque type One = 1
inline val One: One = 1
def getOne: One = One
// getter One is declared as erased, but is in fact used

Output

[error] 32 |def getOne: One = One
[error]    |                  ^^^
[error]    |                  getter One is declared as erased, but is in fact used

Expectation

It should be possible to use an inline val of an opaque type alias for a literal type.

[nicolasstucki]

The current error is

//         getter One is declared as `inline`, but was not inlined
//
//         Try increasing `-Xmax-inlines` above 32

This is the same problem as in #13851 (comment)