Indentation violation for property delegates

[chao2zhang]

Expected Behavior

package com.chaozhang.testktlint

class LongLongLongLongLongLongLongLongLongLongLongLongLongLongName

class UsingPropertyDelegate {
    val a: LongLongLongLongLongLongLongLongLongLongLongLongLongLongName
        by lazy { LongLongLongLongLongLongLongLongLongLongLongLongLongLongName() }
}

Should pass the indentation check as this is using the recommended code style setting in Android Studio.
And also this makes sense, because by is a continuation.

Observed Behavior

/Users/cazhang/TestKtLint/app/src/main/java/com/chaozhang/testktlint/PropertyDelegate.kt:7:1: Unexpected indentation (8) (should be 4)

And the code would be auto corrected to

class UsingPropertyDelegate {
    val a: LongLongLongLongLongLongLongLongLongLongLongLongLongLongName
    by lazy { LongLongLongLongLongLongLongLongLongLongLongLongLongLongName() }
}

Steps to Reproduce

Copy-paste the snippet and run ktlint.

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): custom gradle task
• Version of Gradle used (if applicable): 6.5
• Operating System and version: MacOS 10.15.6
• Link to your project (if it's a public repository): https://gist.github.com/chao2zhang/8a445a3b327c307142e6027ffb691177