[Test] Migrate AbstractBlackBoxCodegenTest to new infrastructure

compiler/testData/codegen/box/ir/serializationRegressions/transitiveClash.kt

@@ -4,9 +4,9 @@
 // EXPECTED_REACHABLE_NODES: 1304
 // IGNORE_BACKEND: JS_IR
 // IGNORE_BACKEND: JS_IR_ES6
-// IGNORE_BACKEND: JVM
 // IGNORE_BACKEND: JVM_IR
 // IGNORE_BACKEND: NATIVE
+// IGNORE_LIGHT_ANALYSIS
 // MODULE: lib1
 // FILE: lib1.kt
 package pkg
@@ -31,4 +31,4 @@ fun box(): String {
     if (foo() != "42") return "FAIL: ${foo()}"
 
     return bar()
-}
+}

compiler/testData/codegen/helpers/CodegenTestHelpersIR.kt

@@ -0,0 +1,3 @@
+package helpers
+
+fun isIR(): Boolean = true

compiler/testData/codegen/helpers/CodegenTestHelpersOldBackend.kt

@@ -0,0 +1,3 @@
+package helpers
+
+fun isIR(): Boolean = false