[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/tests/UnusedParameters.fir.kt

@@ -0,0 +1,43 @@
+import kotlin.reflect.KProperty
+
+class C(a: Int, b: Int, c: Int, d: Int, e: Int = d, val f: String) {
+    init {
+        a + a
+    }
+
+    val g = b
+
+    init {
+        c + c
+    }
+}
+
+fun f(a: Int, b: Int, c: Int = b) {
+    a + a
+}
+
+fun Any.getValue(thisRef: Any?, prop: KProperty<*>): String = ":)"
+fun Any.setValue(thisRef: Any?, prop: KProperty<*>, value: String) {
+}
+
+fun Any.provideDelegate(thisRef: Any?, prop: KProperty<*>) {
+}
+
+operator fun Int.getValue(thisRef: Any?, prop: KProperty<*>): String = ":)"
+
+operator fun Int.setValue(thisRef: Any?, prop: KProperty<*>, value: String) {
+}
+
+operator fun Int.provideDelegate(thisRef: Any?, prop: KProperty<*>) {
+}
+
+
+fun get(p: Any) {
+}
+
+fun set(p: Any) {
+}
+
+fun foo(s: String) {
+    s.<!UNRESOLVED_REFERENCE!>xxx<!> = 1
+}