[FIR] Fix translation of invokes & add return expressions for lambdas

* fixed NoSuchMethod caused by mismatched signatures of the "invoke" method generated for lambda arguments
* added test cases in invoke.kt for KFunction and anonymous functions
* added a transformer to wrap the last expression in the bodies of lambdas with return

compiler/testData/codegen/box/closures/captureInSuperConstructorCall/localCapturedInLambdaInLocalClass.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 open class Base(val fn: () -> String)
 
 fun box(): String {

compiler/testData/codegen/box/closures/captureInSuperConstructorCall/referenceToCapturedVariablesInMultipleLambdas.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 open class Base(val fn1: () -> String, val fn2: () -> String)
 
 fun box(): String {

compiler/testData/codegen/box/closures/closureWithParameter.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box() : String {
     return apply( "OK", {arg: String -> arg } )
 }

compiler/testData/codegen/box/closures/closureWithParameterAndBoxing.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box() : String {
     return if (apply( 5, {arg: Int -> arg + 13 } ) == 18) "OK" else "fail"
 }

compiler/testData/codegen/box/closures/doubleEnclosedLocalVariable.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box() : String {
     val cl = 39
     return if (sum(200, { val ff = {cl}; ff() }) == 239) "OK" else "FAIL"

compiler/testData/codegen/box/closures/enclosingLocalVariable.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box() : String {
     val cl = 39
     return if (sum(200, { val m = { val r = { cl };  r() }; m() }) == 239) "OK" else "FAIL"

compiler/testData/codegen/box/closures/kt4137.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 open class A(val s: Int) {
 
 }

compiler/testData/codegen/box/closures/localClassLambdaClosure.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box(): String {
     val o = "O"
     val ok_L = {o + "K"}

compiler/testData/codegen/box/closures/localReturn.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box(): String {
     val a = 1
     val explicitlyReturned = run1 f@{

compiler/testData/codegen/box/closures/localReturnWithAutolabel.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box(): String {
     val a = 1
     val explicitlyReturned = run1 {

compiler/testData/codegen/box/closures/simplestClosure.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box() : String {
     return invoker( {"OK"} )
 }

compiler/testData/codegen/box/closures/simplestClosureAndBoxing.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box() : String {
     return if (int_invoker( { 7 } ) == 7) "OK" else "fail"
 }

compiler/testData/codegen/box/closures/underscoreParameters.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun foo(block: (String, String, String) -> String): String = block("O", "fail", "K")
 
 fun box() = foo { x, _, y -> x + y }