Aliased import ignored for nullable variants of that type

[mcarleio]

Describe the bug
An aliased import added via addAliasedImport is not used when e.g. function arguments or return types are a nullable version of that:

To Reproduce

package org.example

import com.squareup.kotlinpoet.FileSpec
import com.squareup.kotlinpoet.FunSpec
import com.squareup.kotlinpoet.asTypeName

class PersonId

fun main() {
    println(
        FileSpec.builder("org.example", "SomeFile")
            .addAliasedImport(PersonId::class, "PID")
            .addFunction(
                FunSpec.builder("pid")
                    .addParameter("pid", PersonId::class.asTypeName().copy(nullable = true))
                    .returns(PersonId::class.asTypeName().copy(nullable = true))
                    .addCode("return null")
                    .build()
            )
            .build()
    )
}

Expected behavior
Use the import alias for nullable types:

package org.example

import org.example.PersonId as PID

public fun pid(pid: PID?): PID? = null

Actual behavior
Does not use the import alias for nullable types:

package org.example

import org.example.PersonId as PID

public fun pid(pid: org.example.PersonId?): org.example.PersonId? = null

Additional context
Used version 2.0.0 above.
Worked with version 1.16.0.
Broken since 1.17.0.