Fix wrong "InlineProperties are unsupported at this language level" error on inline functions when inline properties are disabled

compiler/testData/diagnostics/tests/sourceCompatibility/inlineFunctionAlways.kt

@@ -0,0 +1,16 @@
+// !DIAGNOSTICS: -NOTHING_TO_INLINE
+// !LANGUAGE: -InlineProperties
+
+inline fun String.test() {
+}
+
+inline fun test() {
+}
+
+class A {
+    inline fun String.test() {
+    }
+
+    inline fun test() {
+    }
+}