Jackson skips isXXX properties 2.11.x or higher

[SusumuKanazawa]

Describe the bug
when json serialize, isXXX properties is deleted.
This bug has been fixed in 2.10.1, but it may have been degraded 2.11.x or higher.
#346
#337

To Reproduce
create new project in IntellJ IDEA.

build.gradle.kts

dependencies {
    implementation(kotlin("stdlib"))
    implementation("com.fasterxml.jackson.module:jackson-module-kotlin:2.11.+") // or 2.12.+
}

src/main/kotlin/Test.kt

import com.fasterxml.jackson.annotation.JsonProperty
import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
import com.fasterxml.jackson.module.kotlin.readValue
import java.lang.Exception

data class MyData(
    @JsonProperty("id")
    val id: String,
    @JsonProperty("isValue")
    val isValue: Int,
    @JsonProperty("isStringValue")
    val isStringValue: String
    )

fun main() {
    val jsonString = """
        { "id": "id001", "isValue": 1, "isStringValue": "20" }"
        """.trimIndent()

    val mapper = jacksonObjectMapper()

    try {
        val parseData: MyData = mapper.readValue(jsonString)
        println("parseJson")
        println(parseData)

        val jsonData = mapper.writeValueAsString(parseData)
        println("toJson")
        println(jsonData)
    } catch(e: Exception) {
        e.printStackTrace()
    }
}

resutls:

parseJson
MyData(id=id001, isValue=1, isStringValue=20)
toJson
{"id":"id001"}

isXXX is deleted.

Expected behavior
change to 2.10.+

dependencies {
    implementation(kotlin("stdlib"))
    implementation("com.fasterxml.jackson.module:jackson-module-kotlin:2.10.+")
}

results:

parseJson
MyData(id=id001, isValue=1, isStringValue=20)
toJson
{"id":"id001","isValue":1,"isStringValue":"20"}

isXXX is exists.

Versions
Kotlin: 1.4.30
Jackson-module-kotlin: 2.11.+, 2.12.+
Jackson-databind:
IntellJ IDEA: 2020.2.3

[dinomite]

We'll continue to track this in #337