[FIR] Bring conflicting overloads errors closer to K1 behavior

#KT-55860 Fixed

compiler/testData/diagnostics/tests/override/clashesOnInheritance/conflictingInherited.kt

@@ -0,0 +1,31 @@
+// SKIP_TXT
+
+open class A {
+    fun <T> some(s: String): T = null!!
+}
+
+interface I {
+    fun some(text: String) = ""
+}
+
+open <!CONFLICTING_INHERITED_MEMBERS!>class X1<!> : A(), I
+open class X2 : X1()
+
+// for some reason no error in K1
+open class B {
+    fun <T> some(s: String): T = null!!
+
+    fun some(text: String) = ""
+}
+
+open class X3 : B()
+open class X4 : X3()
+
+open class C {
+    fun <T> some(s: String): T = null!!
+}
+
+open class X5 : C() {
+    <!CONFLICTING_OVERLOADS!>fun some(text: String)<!> = ""
+}
+open class X6 : X5()