Change KaptFlag.USE_JVM_IR default value to true

According to the comment on `Kapt3GradleSubplugin.BooleanOption` and the
change in a7b1bade85.

 #KT-53135

plugins/kapt3/kapt3-base/src/org/jetbrains/kotlin/kapt3/base/KaptOptions.kt

@@ -126,7 +126,7 @@ enum class KaptFlag(val description: String, val defaultValue: Boolean = false)
     INCREMENTAL_APT("Incremental annotation processing (apt mode)"),
     STRIP_METADATA("Strip @Metadata annotations from stubs"),
     KEEP_KDOC_COMMENTS_IN_STUBS("Keep KDoc comments in stubs", defaultValue = true),
-    USE_JVM_IR("Use JVM IR backend")
+    USE_JVM_IR("Use JVM IR backend", defaultValue = true)
     ;
 }
 

plugins/kapt3/kapt3-compiler/test/org/jetbrains/kotlin/kapt3/test/integration/AbstractKotlinKapt3IntegrationTestRunner.kt

@@ -6,6 +6,7 @@
 package org.jetbrains.kotlin.kapt3.test.integration
 
 import org.jetbrains.kotlin.backend.common.extensions.IrGenerationExtension
+import org.jetbrains.kotlin.base.kapt3.KaptFlag
 import org.jetbrains.kotlin.kapt3.test.JvmCompilerWithKaptFacade
 import org.jetbrains.kotlin.kapt3.test.KaptContextBinaryArtifact
 import org.jetbrains.kotlin.kapt3.test.KaptEnvironmentConfigurator
@@ -45,8 +46,8 @@ class AbstractKotlinKapt3IntegrationTestRunner(
 
         defaultDirectives {
             +KaptTestDirectives.MAP_DIAGNOSTIC_LOCATIONS
-            if (targetBackend.isIR) {
-                +KaptTestDirectives.USE_JVM_IR
+            if (!targetBackend.isIR) {
+                KaptTestDirectives.DISABLED_FLAGS with KaptFlag.USE_JVM_IR
             }
         }