Reduce highlighting range for UNCHECKED_CAST

#KT-18985 Fixed

compiler/testData/diagnostics/tests/cast/AsArray.kt

@@ -1 +1 @@
-fun f(x: Any) = <!UNCHECKED_CAST!>x as Array<String><!>
+fun f(x: Any) = x <!UNCHECKED_CAST!>as Array<String><!>

compiler/testData/diagnostics/tests/cast/AsErasedError.kt

@@ -1,2 +1,2 @@
 
-fun ff(c: MutableCollection<String>) = <!UNCHECKED_CAST!>c as MutableList<Int><!>
+fun ff(c: MutableCollection<String>) = c <!UNCHECKED_CAST!>as MutableList<Int><!>

compiler/testData/diagnostics/tests/cast/AsErasedWarning.kt

@@ -1,2 +1,2 @@
 
-fun ff(a: Any) = <!UNCHECKED_CAST!>a as MutableList<String><!>
+fun ff(a: Any) = a <!UNCHECKED_CAST!>as MutableList<String><!>

compiler/testData/diagnostics/tests/cast/AsWithOtherParameter.kt

@@ -3,7 +3,7 @@
 class Class<T>(val name: String, val instance: T)
 
 fun <T> test(clazz: Class<T>) {
-    println((<!UNCHECKED_CAST!>clazz as Class<Any><!>).name)
+    println((clazz <!UNCHECKED_CAST!>as Class<Any><!>).name)
 }
 
 fun use() {
@@ -12,22 +12,22 @@ fun use() {
 
 fun checkArrays(): Array<Any> {
     val someArray = arrayOfNulls<Any>(5)
-    <!UNCHECKED_CAST!>someArray as Array<Int><!>
-    return <!UNCHECKED_CAST!>someArray as Array<Any><!>
+    someArray <!UNCHECKED_CAST!>as Array<Int><!>
+    return someArray <!UNCHECKED_CAST!>as Array<Any><!>
 }
 
 class Wrapper<T>(val x: T)
 
 fun checkArrays2(): Array<Wrapper<String>> {
     val someArray = arrayOf(Wrapper(1), Wrapper(2))
-    return <!UNCHECKED_CAST!>someArray as Array<Wrapper<String>><!>
+    return someArray <!UNCHECKED_CAST!>as Array<Wrapper<String>><!>
 }
 
 fun checkArrays3() {
     val someArray = arrayOfNulls<String>(1)
-    <!UNCHECKED_CAST!>someArray as Array<Any><!>
+    someArray <!UNCHECKED_CAST!>as Array<Any><!>
     val intArray = arrayOfNulls<Int>(1)
-    <!UNCHECKED_CAST!>intArray as Array<Any><!>
+    intArray <!UNCHECKED_CAST!>as Array<Any><!>
 }
 
 fun println(s: String) = s

compiler/testData/diagnostics/tests/cast/IsErasedUpcastToNonReified.kt

@@ -10,9 +10,9 @@ fun <T, S : T> test(x: T?, y: S, z: T) {
     <!USELESS_IS_CHECK!>z is T<!>
     <!USELESS_IS_CHECK!>z is T?<!>
 
-    <!UNCHECKED_CAST!>null as T<!>
+    null <!UNCHECKED_CAST!>as T<!>
     null <!USELESS_CAST!>as T?<!>
-    <!UNCHECKED_CAST!>null as S<!>
+    null <!UNCHECKED_CAST!>as S<!>
 }
 
 inline fun <reified T> test(x: T?) {