Use NoSuchElementException instead of KeyMissingException. Deprecate KeyMissingException.

libraries/stdlib/test/collections/MapTest.kt

@@ -1,5 +1,6 @@
 package test.collections
 
+import java.util.*
 import kotlin.test.assertEquals
 import kotlin.test.assertFalse
 import kotlin.test.assertTrue
@@ -24,7 +25,7 @@ class MapTest {
 
     test fun getOrImplicitDefault() {
         val data: MutableMap<String, Int> = hashMapOf("bar" to 1)
-        assertTrue(fails { data.getOrImplicitDefault("foo") } is KeyMissingException)
+        assertTrue(fails { data.getOrImplicitDefault("foo") } is NoSuchElementException)
         assertEquals(1, data.getOrImplicitDefault("bar"))
 
         val mutableWithDefault = data.withDefault { 42 }

libraries/stdlib/test/properties/delegation/MapAccessorsTest.kt

@@ -1,5 +1,6 @@
 package test.properties.delegation
 
+import java.util.*
 import kotlin.properties.*
 import kotlin.test.*
 import org.junit.Test as test
@@ -24,7 +25,7 @@ class ValByMapExtensionsTest {
         assertEquals("default", e)
         assertEquals(1, i)
         assertEquals(1.0, x)
-        fails { d }
+        assertTrue(fails { d } is NoSuchElementException)
     }
 }
 
@@ -59,7 +60,7 @@ class VarByMapExtensionsTest {
         map["a"] = null
         a // fails { a } // does not fail due to KT-8135
 
-        fails { d }
+        assertTrue(fails { d } is NoSuchElementException)
         map["d"] = null
         assertEquals(null, d)
     }