Use type substitution when matching header-impl members

Previously, type substitution, which is critical for matching generic
header/impl members with each other, was only performed when
checkImplementationHasHeaderDeclaration was called for impl class
(areCompatibleClassifiers creates the correct substitutor). This was
done in areCompatibleClassifiers: a substitutor which maps type
parameters of the header class to type parameters of the impl class was
created.

Now we create the same substitutor when
checkImplementationHasHeaderDeclaration is called for an impl member of
an impl class as well, manually.

 #KT-15230 Fixed

compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java

@@ -13153,6 +13153,21 @@ public class DiagnosticsTestGenerated extends AbstractDiagnosticsTest {
                 }
             }
 
+            @TestMetadata("compiler/testData/diagnostics/tests/multiplatform/generic")
+            @TestDataPath("$PROJECT_ROOT")
+            @RunWith(JUnit3RunnerWithInners.class)
+            public static class Generic extends AbstractDiagnosticsTest {
+                public void testAllFilesPresentInGeneric() throws Exception {
+                    KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/diagnostics/tests/multiplatform/generic"), Pattern.compile("^(.+)\\.kt$"), TargetBackend.ANY, true);
+                }
+
+                @TestMetadata("membersInGenericClass.kt")
+                public void testMembersInGenericClass() throws Exception {
+                    String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/multiplatform/generic/membersInGenericClass.kt");
+                    doTest(fileName);
+                }
+            }
+
             @TestMetadata("compiler/testData/diagnostics/tests/multiplatform/headerClass")
             @TestDataPath("$PROJECT_ROOT")
             @RunWith(JUnit3RunnerWithInners.class)