[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.

native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/K2NativeCodegenBoxTestGenerated.java

@@ -4780,6 +4780,12 @@ public class K2NativeCodegenBoxTestGenerated extends AbstractNativeCodegenBoxTes
                 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 {

native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/NativeCodegenBoxTestGenerated.java

@@ -4729,6 +4729,12 @@ public class NativeCodegenBoxTestGenerated extends AbstractNativeCodegenBoxTest
                 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 {