Add JavaToKotlinClassMap#isJavaPlatformClass

Use it instead of mapPlatformClass where we only need to check emptiness
because mapPlatformClass requires built-ins and it's not always easy to come up
with the correct instance of built-ins.

In KotlinEvaluationBuilder, use the nullable function
findClassAcrossModuleDependencies instead of mapPlatformClass which uses the
throwing resolveClassByFqName. This is necessary because DefaultBuiltIns, which
are used there, are not always able to find classes mapped by a _Java_ to
Kotlin class map. (The correct solution would be not to use DefaultBuiltIns at
all, instead obtaining the correct instance of built-ins, which are almost
certainly going to be JvmBuiltIns, from the project configuration.)

j2k/src/org/jetbrains/kotlin/j2k/importConversion.kt

@@ -21,7 +21,6 @@ import org.jetbrains.kotlin.asJava.classes.KtLightClass
 import org.jetbrains.kotlin.asJava.classes.KtLightClassForFacade
 import org.jetbrains.kotlin.asJava.elements.KtLightDeclaration
 import org.jetbrains.kotlin.asJava.elements.KtLightMethod
-import org.jetbrains.kotlin.builtins.DefaultBuiltIns
 import org.jetbrains.kotlin.descriptors.PropertyDescriptor
 import org.jetbrains.kotlin.j2k.ast.Import
 import org.jetbrains.kotlin.j2k.ast.ImportList
@@ -60,7 +59,7 @@ private fun Converter.convertImport(fqName: FqName, ref: PsiJavaCodeReferenceEle
         if (annotationConverter.isImportNotRequired(fqName)) return emptyList()
 
         // If imported class has a kotlin analog, drop the import
-        if (!JavaToKotlinClassMap.INSTANCE.mapPlatformClass(fqName, DefaultBuiltIns.Instance).isEmpty()) return emptyList()
+        if (JavaToKotlinClassMap.INSTANCE.isJavaPlatformClass(fqName)) return emptyList()
     }
 
     //TODO: how to detect compiled Kotlin here?