Support bridges in interfaces. Fix for KT-12416: Missed bridges in js backend

#KT-12416 Fixed

compiler/testData/codegen/box/bridges/kt12416.kt

@@ -0,0 +1,41 @@
+interface A<T> {
+    fun foo(t: T, u: Int) = "A"
+}
+
+interface B<T, U> {
+    fun foo(t: T, u: U) = "B"
+}
+
+interface Z1 : A<String>, B<String, Int> {
+    override fun foo(t: String, u: Int) = "Z1"
+}
+
+interface Z2 : B<String, Int>, A<String> {
+    override fun foo(t: String, u: Int) = "Z2"
+}
+
+class Z1C : Z1 {
+
+}
+
+class Z2C : Z2 {
+
+}
+
+fun box(): String {
+    val z1 = Z1C()
+    val z2 = Z2C()
+    val z1a: A<String> = z1
+    val z1b: B<String, Int> = z1
+    val z2a: A<String> = z2
+    val z2b: B<String, Int> = z2
+    return when {
+        z1.foo("", 0)  != "Z1" -> "Fail #1"
+        z1a.foo("", 0) != "Z1" -> "Fail #2"
+        z1b.foo("", 0) != "Z1" -> "Fail #3" //FAIL
+        z2.foo("", 0)  != "Z2" -> "Fail #4"
+        z2a.foo("", 0) != "Z2" -> "Fail #5"
+        z2b.foo("", 0) != "Z2" -> "Fail #6"
+        else -> "OK"
+    }
+}

compiler/testData/codegen/box/bridges/twoParentsWithDifferentMethodsTwoBridges2.kt

@@ -0,0 +1,40 @@
+interface A<T> {
+    fun foo(t: T, u: Int) = "A"
+}
+
+interface B<T, U> {
+    fun foo(t: T, u: U) = "B"
+}
+
+interface Z1 : A<String>, B<String, Int> {
+    override fun foo(t: String, u: Int) = "Z1"
+}
+
+interface Z2 : B<String, Int>, A<String> {
+    override fun foo(t: String, u: Int) = "Z2"
+}
+
+
+class Z1Class : Z1 {
+}
+
+class Z2Class : Z2 {
+}
+
+fun box(): String {
+    val z1 = Z1Class()
+    val z2 = Z2Class()
+    val z1a: A<String> = z1
+    val z1b: B<String, Int> = z1
+    val z2a: A<String> = z2
+    val z2b: B<String, Int> = z2
+    return when {
+        z1.foo("", 0)  != "Z1" -> "Fail #1"
+        z1a.foo("", 0) != "Z1" -> "Fail #2"
+        z1b.foo("", 0) != "Z1" -> "Fail #3" //FAIL
+        z2.foo("", 0)  != "Z2" -> "Fail #4"
+        z2a.foo("", 0) != "Z2" -> "Fail #5"
+        z2b.foo("", 0) != "Z2" -> "Fail #6"
+        else -> "OK"
+    }
+}