[K/N] Make classes generated from λs that use generic parameters generic

Previously, a function reference that used generic parameters from its
outer scope was lowered into a top-level non-generic subclass of
`FunctionN`, with `FunctionN` type arguments referencing type parameters
not present in the scope anymore. This sometimes resulted in generating
malformed mangled names.

From now on the generated subclass of `FunctionN` is generic. The needed
type arguments are passed upon instantiation, when the relevant generic
parameters are present in the scope.

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java

@@ -6041,6 +6041,12 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/closures/capturedLocalGenericFun.kt");
         }
 
+        @Test
+        @TestMetadata("closureCapturingGenericParam.kt")
+        public void testClosureCapturingGenericParam() throws Exception {
+            runTest("compiler/testData/codegen/box/closures/closureCapturingGenericParam.kt");
+        }
+
         @Test
         @TestMetadata("closureInsideConstrucor.kt")
         public void testClosureInsideConstrucor() throws Exception {

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java

@@ -6197,6 +6197,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/closures/capturedLocalGenericFun.kt");
         }
 
+        @Test
+        @TestMetadata("closureCapturingGenericParam.kt")
+        public void testClosureCapturingGenericParam() throws Exception {
+            runTest("compiler/testData/codegen/box/closures/closureCapturingGenericParam.kt");
+        }
+
         @Test
         @TestMetadata("closureInsideConstrucor.kt")
         public void testClosureInsideConstrucor() throws Exception {