JVM_IR indy-lambdas: minor updates and fixes

KT-44278 KT-26060 KT-42621

compiler/testData/codegen/box/invokedynamic/lambdas/bigArityExtLambda.kt

@@ -0,0 +1,24 @@
+// TARGET_BACKEND: JVM
+// IGNORE_BACKEND: JVM
+// IGNORE_LIGHT_ANALYSIS
+// JVM_TARGET: 1.8
+// LAMBDAS: INDY
+
+fun test(
+    extFn: Int.(
+        p0: String, p1: String,
+        p2: Int, p3: Int, p4: Int, p5: Int, p6: Int, p7: Int, p8: Int, p9: Int,
+        p10: Int, p11: Int, p12: Int, p13: Int, p14: Int, p15: Int, p16: Int, p17: Int, p18: Int, p19: Int,
+        p20: Int, p21: Int, p22: Int
+    ) -> String
+) =
+    42.extFn("O", "K", 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
+
+fun box() =
+    test { p0: String, p1: String,
+           p2: Int, p3: Int, p4: Int, p5: Int, p6: Int, p7: Int, p8: Int, p9: Int,
+           p10: Int, p11: Int, p12: Int, p13: Int, p14: Int, p15: Int, p16: Int, p17: Int, p18: Int, p19: Int,
+           p20: Int, p21: Int, p22: Int
+        ->
+        p0 + p1
+    }