[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/ir/irText/declarations/annotations/delegateFieldWithAnnotations.fir.txt

@@ -25,7 +25,8 @@ FILE fqName:<root> fileName:/delegateFieldWithAnnotations.kt
           initializer: FUN_EXPR type=kotlin.Function0<kotlin.Int> origin=LAMBDA
             FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> () returnType:kotlin.Int
               BLOCK_BODY
-                CONST Int type=kotlin.Int value=42
+                RETURN type=kotlin.Nothing from='local final fun <anonymous> (): kotlin.Int declared in <root>.test1$delegate'
+                  CONST Int type=kotlin.Int value=42
     FUN DELEGATED_PROPERTY_ACCESSOR name:<get-test1> visibility:public modality:FINAL <> () returnType:kotlin.Int
       correspondingProperty: PROPERTY name:test1 visibility:public modality:FINAL [delegated,val]
       BLOCK_BODY