JVM_IR: repair overriddenSymbols in InterfaceDelegationLowering

When creating delegation redirectors for default implementations of
interface functions, `overriddenSymbols` should be repaired across the
whole module, not just a particular file.

compiler/testData/codegen/box/bridges/fakeOverrideMultiFile.kt

@@ -0,0 +1,18 @@
+// FILE: 1.kt
+class Test: Impl(), CProvider
+
+fun box() = "OK"
+
+// FILE: 2.kt
+open class C
+class D: C()
+
+interface CProvider {
+    fun getC(): C
+}
+
+interface DProvider {
+    fun getC(): D = D()
+}
+
+open class Impl: DProvider