K2: Refine mapping of primitive arrays to JVM descriptor

Earlier, it wasn't really important but after the previous commit
when JvmMappedScope semantics has been changed, we erroneously
started loading `toCharArray` as a member to String because
its jvmDescriptor was computed to "toCharArray()Lkotlin/CharArray",
while hardcoded information that prevents it from loading expect
"toCharArray()[C" there.

^KT-57694 In progress

compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java

@@ -24093,6 +24093,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/jdk/kt1397.kt");
         }
 
+        @TestMetadata("noStringToCharArray.kt")
+        public void testNoStringToCharArray() throws Exception {
+            runTest("compiler/testData/codegen/box/jdk/noStringToCharArray.kt");
+        }
+
         @TestMetadata("removeIf.kt")
         public void testRemoveIf() throws Exception {
             runTest("compiler/testData/codegen/box/jdk/removeIf.kt");