Update class fields tags in non-generated test files

test/language/statements/class/privatename-not-valid-eval-earlyerr-4.js

@@ -14,7 +14,7 @@ info: |
                 1. If names does not contain N, append N to names.
             ii. Let env be env's outer environment reference.
     3. If AllPrivateNamesValid of ScriptBody with the argument names is false, throw a SyntaxError exception.
-features: [class-fields]
+features: [class, class-fields-private]
 ---*/
 
 var executed = false;

test/language/statements/class/privatename-not-valid-eval-earlyerr-5.js

@@ -14,7 +14,7 @@ info: |
                 1. If names does not contain N, append N to names.
             ii. Let env be env's outer environment reference.
     3. If AllPrivateNamesValid of ScriptBody with the argument names is false, throw a SyntaxError exception.
-features: [class-fields]
+features: [class, class-fields-private]
 ---*/
 
 var executed = false;

test/language/statements/class/privatename-not-valid-eval-earlyerr-6.js

@@ -14,7 +14,7 @@ info: |
                 1. If names does not contain N, append N to names.
             ii. Let env be env's outer environment reference.
     3. If AllPrivateNamesValid of ScriptBody with the argument names is false, throw a SyntaxError exception.
-features: [class-fields]
+features: [class, class-fields-private]
 ---*/
 
 var executed = false;

test/language/statements/class/privatename-not-valid-eval-earlyerr-7.js

@@ -8,7 +8,7 @@ info: |
     1. Let names be an empty List.
       ...
     3. If AllPrivateNamesValid of ScriptBody with the argument names is false, throw a SyntaxError exception.
-features: [class-fields]
+features: [class-fields-private]
 ---*/
 
 var executed = false;

test/language/statements/class/privatename-not-valid-eval-earlyerr-8.js

@@ -8,7 +8,7 @@ info: |
     1. Let names be an empty List.
       ...
     3. If AllPrivateNamesValid of ScriptBody with the argument names is false, throw a SyntaxError exception.
-features: [class-fields]
+features: [class-fields-private]
 ---*/
 
 var executed = false;

test/language/statements/class/privatename-valid-no-earlyerr.js

@@ -27,7 +27,7 @@ info: |
 
     For all other grammatical productions, recurse on subexpressions/substatements, passing in the names of the caller. If all pieces return true, then return true. If any returns false, return false.
 
-features: [class-fields]
+features: [class, class-fields-private]
 ---*/
 
 class outer {