[FIR] Substitute types from arguments in evaluating of contract

#KT-41078

compiler/fir/analysis-tests/testData/resolve/contracts/genericContract.kt

@@ -0,0 +1,25 @@
+// WITH_STDLIB
+
+import kotlin.contracts.*
+
+inline fun <reified T> requreIsInstance(value: Any) contract [
+    returns() implies (value is T)
+] {
+    if (value !is T) throw IllegalArgumentException()
+}
+
+fun test_1(s: Any) {
+    requreIsInstance<String>(s)
+    s.length
+}
+
+inline fun <reified T> requreIsInstanceOf(value: Any, requiredValue: T) contract [
+    returns() implies (value is T)
+] {
+    if (value !is T) throw IllegalArgumentException()
+}
+
+fun test_2(x: Any, s: String) {
+    requreIsInstanceOf(x, s)
+    x.length
+}