fix prop modality reading from class files

compiler/testData/readJavaBinaryClass/FieldAsVar.txt

@@ -2,5 +2,5 @@ namespace test
 
 final class test.FieldAsVar : jet.Any {
     final /*constructor*/ fun <init>(): test.FieldAsVar
-    var f: jet.Int
+    final var f: jet.Int
 }

compiler/testData/readJavaBinaryClass/FieldOfArrayType.txt

@@ -2,5 +2,5 @@ namespace test
 
 open class test.FieldOfArrayType : jet.Any {
     final /*constructor*/ fun <init>(): test.FieldOfArrayType
-    var files: jet.Array<java.io.File?>?
+    final var files: jet.Array<java.io.File?>?
 }

compiler/testData/readJavaBinaryClass/FinalFieldAsVal.txt

@@ -2,5 +2,5 @@ namespace test
 
 final class test.FinalFieldAsVal : jet.Any {
     final /*constructor*/ fun <init>(): test.FinalFieldAsVal
-    val f: jet.Int
+    final val f: jet.Int
 }

compiler/testData/readJavaBinaryClass/TwoFields.txt

@@ -2,6 +2,6 @@ namespace test
 
 final class test.TwoFields : jet.Any {
     final /*constructor*/ fun <init>(): test.TwoFields
-    var a: jet.Int
-    var b: jet.Short
+    final var a: jet.Int
+    final var b: jet.Short
 }

compiler/testData/readJavaBinaryClass/notNull/NotNullField.txt

@@ -2,5 +2,5 @@ namespace test
 
 open class test.NotNullField : jet.Any {
     final /*constructor*/ fun <init>(): test.NotNullField
-    var hi: jet.String
+    final var hi: jet.String
 }