Replace get() and set() to getValue() and setValue() (property delegates)

compiler/testData/diagnostics/tests/smartCasts/kt2865.kt

@@ -1,4 +1,4 @@
-operator fun <K, V> MutableMap<K, V>.set(k: K, v: V) {}
+operator fun <K, V> MutableMap<K, V>.set(<!UNUSED_PARAMETER!>k<!>: K, <!UNUSED_PARAMETER!>v<!>: V) {}
 
 fun foo(a: MutableMap<String, String>, x: String?) {
     a[x!!] = <!DEBUG_INFO_SMARTCAST!>x<!>

compiler/testData/diagnostics/tests/smartCasts/publicVals/delegate.kt

@@ -1,5 +1,5 @@
 class Delegate {
-    fun get(thisRef: Any?, prop: PropertyMetadata): String? {
+    fun getValue(thisRef: Any?, prop: PropertyMetadata): String? {
         return null
     }
 }

compiler/testData/diagnostics/tests/smartCasts/publicVals/delegate.txt

@@ -3,7 +3,7 @@ package
 public final class Delegate {
     public constructor Delegate()
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
-    public final fun get(/*0*/ thisRef: kotlin.Any?, /*1*/ prop: kotlin.PropertyMetadata): kotlin.String?
+    public final fun getValue(/*0*/ thisRef: kotlin.Any?, /*1*/ prop: kotlin.PropertyMetadata): kotlin.String?
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }