Unused import thrown when using `` in import

[jlvs-chirp]

Expected Behavior

I expect the following code to pass lint check.

import com.test.`object`.Producer as Producer1

class Consumer(producer1: Producer1<String>) {
    val x = 1
}

Observed Behavior

But it fails with ktlint-repro/src/main/kotlin/Consumer.kt:1:1: Unused import

If I refactor com.test.`object`.Producer to a package name that does not require ` then ktlint passes.

Steps to Reproduce

Run ktlint on the above file.

Your Environment

• Version of ktlint used: 0.39.0
• Name and version (or code for custom task) of integration used (Gradle plugin, Maven plugin, command line, custom Gradle task): Gradle plugin "org.jlleitschuh.gradle.ktlint" version "9.4.0"
• Version of Gradle used (if applicable): 6.1.1
• Operating System and version: Mac OS
• Link to your project (if it's a public repository): N/A

[jlvs-chirp]

Thank you!