Check JvmRecordSupport language feature before generating synthetic properties

compiler/testData/diagnostics/testsWithJava15/jvmRecord/disabledFeature.kt

@@ -1,5 +1,8 @@
 // !LANGUAGE: -JvmRecordSupport
 // SKIP_TXT
+// FILE: JRecord.java
+public record JRecord(int x, CharSequence y) {}
+// FILE: main.kt
 
 <!UNSUPPORTED_FEATURE!>@JvmRecord<!>
 class MyRec(
@@ -7,3 +10,13 @@ class MyRec(
     val y: Int,
     vararg val z: Double,
 )
+
+fun foo(jr: JRecord) {
+    JRecord(1, "")
+
+    jr.x()
+    jr.y()
+
+    jr.<!FUNCTION_CALL_EXPECTED!>x<!>
+    jr.<!FUNCTION_CALL_EXPECTED!>y<!>
+}

compiler/testData/diagnostics/testsWithJava15/jvmRecord/simpleRecords.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +JvmRecordSupport
 // FILE: MyRecord.java
 public record MyRecord(int x, CharSequence y) {