JVM_IR: use indy SAM conversions in jvmTarget 1.8+, fix bridges

KT-44278 KT-26060 KT-42621

compiler/testData/codegen/box/annotations/annotatedLambda/samLambda.kt

@@ -1,5 +1,6 @@
 // TARGET_BACKEND: JVM
-
+// SAM_CONVERSIONS: CLASS
+//   ^ test checks reflection for synthetic classes
 // WITH_RUNTIME
 // FILE: Test.java
 
@@ -9,9 +10,10 @@ class Test {
     }
 }
 
-// FILE: test.kt
+// FILE: samLambda.kt
 
 import java.lang.reflect.Method
+
 import kotlin.test.assertEquals
 
 @Target(AnnotationTarget.FUNCTION)