Exit if it's impossible to create file during copy/past (KT-26210)

#KT-26210 Fixed

idea/src/org/jetbrains/kotlin/idea/conversion/copy/KotlinFilePasteProvider.kt

@@ -16,6 +16,7 @@ import com.intellij.openapi.project.Project
 import com.intellij.psi.JavaDirectoryService
 import com.intellij.psi.PsiDocumentManager
 import com.intellij.psi.util.PsiTreeUtil
+import com.intellij.util.IncorrectOperationException
 import org.jetbrains.kotlin.idea.util.application.executeWriteCommand
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.psi.KtFile
@@ -35,7 +36,12 @@ class KotlinFilePasteProvider : PasteProvider {
         val fileName = (ktFile.declarations.firstOrNull()?.name ?: return) + ".kt"
         val directory = ideView.getOrChooseDirectory() ?: return
         project.executeWriteCommand("Create Kotlin file") {
-            val file = directory.createFile(fileName)
+            val file = try {
+                directory.createFile(fileName)
+            } catch (e: IncorrectOperationException) {
+                return@executeWriteCommand
+            }
+
             val documentManager = PsiDocumentManager.getInstance(project)
             val document = documentManager.getDocument(file)
             if (document != null) {