Ensure java is forced to compile when kotlin is compiled incrementally

Previously java compilation was not forced when there were only
removed kotlin files.

libraries/tools/kotlin-gradle-plugin-core/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/Tasks.kt

@@ -414,11 +414,12 @@ open class KotlinCompile() : AbstractKotlinCompile<K2JVMCompilerArguments>() {
                                mapClassesFqNamesToFiles(caches.values, dirtyClassFqNames, logAction, ::projectRelativePath, excludes = sourcesToCompile)
 
             if (currentRemoved.any()) {
+                anyClassesCompiled = true
                 currentRemoved = listOf()
             }
         }
 
-        anyClassesCompiled = allGeneratedFiles.isNotEmpty()
+        anyClassesCompiled = anyClassesCompiled || allGeneratedFiles.isNotEmpty()
         processCompilerExitCode(exitCode)
     }