Fix getting text from clipboard (#579)

* Fix getting text from clipboard

Sometimes, internal AWT implementation can't properly parse the clipboard data.

getData's docs say that it can throw IOException

* Return UnsupportedFlavorException

skiko/src/awtMain/kotlin/org/jetbrains/skiko/Actuals.awt.kt

@@ -7,6 +7,7 @@ import java.awt.Toolkit
 import java.awt.datatransfer.DataFlavor
 import java.awt.datatransfer.StringSelection
 import java.awt.datatransfer.UnsupportedFlavorException
+import java.io.IOException
 import java.net.URI
 import javax.swing.UIManager
 
@@ -60,6 +61,8 @@ internal actual fun ClipboardManager_getText(): String? {
         systemClipboard?.getData(DataFlavor.stringFlavor) as String?
     } catch (_: UnsupportedFlavorException) {
         null
+    } catch (_: IOException) {
+        null
     }
 }