JVM IR: Avoid direct invokes in callable reference tests

Due to the direct invoke optimization, most callable reference tests
were not generating callable references/lambdas.

compiler/testData/codegen/box/directInvokeOptimization/boundInnerContructorRef.kt

@@ -1,6 +1,6 @@
 // CHECK_BYTECODE_TEXT
 // JVM_IR_TEMPLATES
-// 0 Function(^.)*.invoke
+// 0 invoke
 
 class Outer (val x: String) {
     inner class Inner(val y: String) {

compiler/testData/codegen/box/directInvokeOptimization/boundMemberRef.kt

@@ -1,6 +1,6 @@
 // CHECK_BYTECODE_TEXT
 // JVM_IR_TEMPLATES
-// 0 Function(^.)*.invoke
+// 0 invoke
 
 class C(val x: String) {
     fun foo(s: String) = x + s

compiler/testData/codegen/box/directInvokeOptimization/contructorRef.kt

@@ -1,6 +1,6 @@
 // CHECK_BYTECODE_TEXT
 // JVM_IR_TEMPLATES
-// 0 Function(^.)*.invoke
+// 0 invoke
 
 class C(x: String, y: String) {
     val yx = y + x

compiler/testData/codegen/box/directInvokeOptimization/nestedLambdas.kt

@@ -1,6 +1,6 @@
 // CHECK_BYTECODE_TEXT
 // JVM_IR_TEMPLATES
-// 0 Function(^.)*.invoke
+// 0 invoke
 
 fun box() =
     { k: String ->

compiler/testData/codegen/box/directInvokeOptimization/simpleAnonymousFun.kt

@@ -1,6 +1,6 @@
 // CHECK_BYTECODE_TEXT
 // JVM_IR_TEMPLATES
-// 0 Function(^.)*.invoke
+// 0 invoke
 
 fun box() =
     (fun (s: String): String {

compiler/testData/codegen/box/directInvokeOptimization/simpleFunRef.kt

@@ -1,6 +1,6 @@
 // CHECK_BYTECODE_TEXT
 // JVM_IR_TEMPLATES
-// 0 Function(^.)*.invoke
+// 0 invoke
 
 fun ok(s: String) = "O" + s
 

compiler/testData/codegen/box/directInvokeOptimization/simpleLambda.kt

@@ -1,6 +1,6 @@
 // CHECK_BYTECODE_TEXT
 // JVM_IR_TEMPLATES
-// 0 Function(^.)*.invoke
+// 0 invoke
 
 fun box() =
     { s: String ->

compiler/testData/codegen/box/directInvokeOptimization/unboundInnerContructorRef.kt

@@ -1,6 +1,6 @@
 // CHECK_BYTECODE_TEXT
 // JVM_IR_TEMPLATES
-// 0 Function(^.)*.invoke
+// 0 invoke
 
 class Outer (val x: String) {
     inner class Inner(val y: String) {

compiler/testData/codegen/box/directInvokeOptimization/unboundMemberRef.kt

@@ -1,2 +1,6 @@
+// CHECK_BYTECODE_TEXT
+// JVM_IR_TEMPLATES
+// 0 invoke
+
 fun box(): String =
     (String::plus)("O", "K")