JVM_IR: Generate args check in existing methods for special bridge methods.

Fix the number of arguments checked (1 for getOrDefault and 2 for
remove).

compiler/testData/codegen/box/builtinStubMethods/mapGetOrDefault/noTypeSafeBridge.kt

@@ -4,10 +4,6 @@
 // FULL_JDK
 // WITH_RUNTIME
 
-// Bridges are not generated because their signatures would conflict. The logic
-// should be inserted directly into existing methods, but this is not implemented.
-// IGNORE_BACKEND: JVM_IR
-
 class A : MutableMap<Any, Any?> {
     override val entries: MutableSet<MutableMap.MutableEntry<Any, Any?>>
         get() = throw UnsupportedOperationException()

compiler/testData/codegen/box/builtinStubMethods/mapGetOrDefault/typeSafeBridge.kt

@@ -1,6 +1,5 @@
 // IGNORE_BACKEND_FIR: JVM_IR
 // SKIP_JDK6
-// IGNORE_BACKEND: JVM_IR
 // TARGET_BACKEND: JVM
 // FULL_JDK
 // WITH_RUNTIME

compiler/testData/codegen/box/builtinStubMethods/mapGetOrDefault/typeSafeBridgeNotNullAny.kt

@@ -1,6 +1,5 @@
 // IGNORE_BACKEND_FIR: JVM_IR
 // SKIP_JDK6
-// IGNORE_BACKEND: JVM_IR
 // TARGET_BACKEND: JVM
 // FULL_JDK
 // WITH_RUNTIME