KT-16436 Incorrect primitive constants handling

Expression '1.unaryMinus()' is resolved as Int::unaryMinus call with Int receiver.
However, this expression is implicitly coerced to a different integral type (Byte, Short, Long)
based on results of constant evaluation.

Introduce IMPLICIT_INTEGER_COERCION type operator to handle such cases.

TODO: should we use it for simple constant expressions like '1' and '-1'?

compiler/testData/ir/irText/expressions/primitivesImplicitConversions.kt

@@ -0,0 +1,9 @@
+fun test() {
+    val test1: Int? = 42
+    val test2: Long = 42
+    val test3: Long? = 42
+    val test4: Long? = -1
+    val test5: Long? = 1.unaryMinus()
+    val test6: Short? = 1.unaryMinus()
+    val test7: Byte? = 1.unaryMinus()
+}

compiler/testData/ir/irText/expressions/primitivesImplicitConversions.txt

@@ -0,0 +1,23 @@
+FILE /primitivesImplicitConversions.kt
+  FUN public fun test(): kotlin.Unit
+    BLOCK_BODY
+      VAR val test1: kotlin.Int? = 42
+        CONST Int type=kotlin.Int value='42'
+      VAR val test2: kotlin.Long = 42.toLong()
+        CONST Long type=kotlin.Long value='42'
+      VAR val test3: kotlin.Long? = 42.toLong()
+        CONST Long type=kotlin.Long value='42'
+      VAR val test4: kotlin.Long? = -1.toLong()
+        CONST Long type=kotlin.Long value='-1'
+      VAR val test5: kotlin.Long? = -1.toLong()
+        TYPE_OP origin=IMPLICIT_INTEGER_COERCION typeOperand=kotlin.Long
+          CALL 'unaryMinus(): Int' type=kotlin.Int origin=null
+            $this: CONST Int type=kotlin.Int value='1'
+      VAR val test6: kotlin.Short? = -1.toShort()
+        TYPE_OP origin=IMPLICIT_INTEGER_COERCION typeOperand=kotlin.Short
+          CALL 'unaryMinus(): Int' type=kotlin.Int origin=null
+            $this: CONST Int type=kotlin.Int value='1'
+      VAR val test7: kotlin.Byte? = -1.toByte()
+        TYPE_OP origin=IMPLICIT_INTEGER_COERCION typeOperand=kotlin.Byte
+          CALL 'unaryMinus(): Int' type=kotlin.Int origin=null
+            $this: CONST Int type=kotlin.Int value='1'