JVM_IR: use indy SAM conversions in jvmTarget 1.8+, fix bridges

KT-44278 KT-26060 KT-42621

compiler/testData/codegen/box/invokedynamic/sam/specializedGenerics/mixGenericAndString.kt

@@ -0,0 +1,29 @@
+// TARGET_BACKEND: JVM
+// JVM_TARGET: 1.8
+// SAM_CONVERSIONS: INDY
+
+fun interface IFooT<T> {
+    fun foo(x: T): T
+}
+
+fun interface IFooStr {
+    fun foo(x: String): String
+}
+
+fun interface IFooMix0 : IFooT<String>, IFooStr
+
+fun interface IFooMix1 : IFooT<String>, IFooStr {
+    override fun foo(x: String): String
+}
+
+fun box(): String {
+    val f0 = IFooMix0 { "O" + it }
+    if (f0.foo("K") != "OK")
+        return "Failed: f0.foo(\"K\")=${f0.foo("K")}"
+
+    val f1 = IFooMix1 { it + "K" }
+    if (f1.foo("O") != "OK")
+        return "Failed: f1.foo(\"O\")=${f1.foo("O")}"
+
+    return "OK"
+}