IR: add and unmute tests

compiler/testData/codegen/box/coroutines/suspendLambdaInInterface.kt

@@ -0,0 +1,13 @@
+suspend fun susp() {}
+
+interface I {
+
+    suspend fun problematic() {
+            run {
+                    susp()
+            }
+    }
+}
+
+// We only test compilation.
+fun box() = "OK"

compiler/testData/codegen/box/inlineClasses/kt27096_innerClass.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +InlineClasses
-// IGNORE_BACKEND_FIR: JVM_IR
 
 class Outer<X>(val x: X) {
     inner class Inner<Y>(val y: Y) {

compiler/testData/codegen/box/localClasses/localGenericWithTypeParameters.kt

@@ -0,0 +1,11 @@
+class Q<TT> {
+    fun <T> qz(x: T, block: (T) -> String) = block(x)
+
+    fun problematic(): String {
+        class CC
+
+        return qz(CC::class) { "OK" }
+    }
+}
+
+fun box() = Q<Int>().problematic()