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/bytecodeText/capturedVarsOptimization/capturedValInLambdaInitializedOutside.kt

@@ -3,7 +3,7 @@ fun box(): String {
     x = "OK"
     {
         val y = x
-    }()
+    }.let { it() }
     return x
 }
 

compiler/testData/codegen/bytecodeText/properties/lateinit/companionObjectFromLambda.kt

@@ -3,14 +3,14 @@ class Foo {
         lateinit var x: String
 
         fun test() {
-            consume({ x }());
-            { consume(x) }()
+            consume({ x }.let { it() });
+            { consume(x) }.let { it() }
         }
     }
 
     fun test2() {
-        consume({ x }());
-        { consume(x) }()
+        consume({ x }.let { it() });
+        { consume(x) }.let { it() }
     }
 }
 

compiler/testData/codegen/bytecodeText/when/exhaustiveWhenSpecialCases.kt

@@ -81,7 +81,7 @@ fun testLambdaResultExpression_throws(a: A) {
             A.V1 -> 1
             // else -> throw
         }
-    }()
+    }.let { it() }
 }
 
 // JVM_TEMPLATES