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

compiler/testData/diagnostics/tests/operatorRem/remWithModAndModAssign.fir.kt

@@ -0,0 +1,17 @@
+// !LANGUAGE: -ProhibitOperatorMod
+// !DIAGNOSTICS: -UNUSED_PARAMETER, -EXTENSION_SHADOWED_BY_MEMBER
+
+class ModAndRemAssign {
+    operator fun mod(x: Int) = ModAndRemAssign()
+    operator fun mod(x: String) = ModAndRemAssign()
+    operator fun modAssign(x: String) {}
+    operator fun rem(x: Int) = ModAndRemAssign()
+}
+
+operator fun ModAndRemAssign.mod(x: String) = ModAndRemAssign()
+operator fun ModAndRemAssign.modAssign(x: String) {}
+
+fun test() {
+    var modAndRemAssign = ModAndRemAssign()
+    modAndRemAssign %= 1
+}