Backport "Fix test directive in i18533" to LTS (#20958)

Backports #19802 to the LTS branch.

PR submitted by the release tooling.
[skip ci]

Author: WojciechMazur

Diff for: tests/neg/i18533.check

@@ -1,8 +1,8 @@
+-- Error: tests/neg/i18533/Non_SCALA_ONLY.java:4:7 ---------------------------------------------------------------------
+4 |public non class Test { // error
+  |       ^^^
+  |       Identifier 'non' is not allowed here
 -- Error: tests/neg/i18533/Pet_SCALA_ONLY.java:3:10 --------------------------------------------------------------------
 3 |class Pet permits Cat { // error
   |          ^^^^^^^
   |          A type declaration that has a permits clause should have a sealed modifier
--- Error: tests/neg/i18533/non-SCALA_ONLY.java:4:7 ---------------------------------------------------------------------
-4 |public non class Test { // error
-  |       ^^^
-  |       Identifier 'non' is not allowed here

Diff for: tests/neg/i18533/non-SCALA_ONLY.java renamed to tests/neg/i18533/Non_SCALA_ONLY.java

@@ -3,4 +3,4 @@
 // Special test for the non-sealed trick (See JavaParsers.scala::modifiers)
 public non class Test { // error
 
-}
+}

Diff for: tests/pos/i18533/Cat.java

@@ -1,5 +1,5 @@
 //> using javacOpt --enable-preview --source 17
-//> test: -jvm 17+
+// test: -jvm 17+
 
 package i18533;
 

Diff for: tests/pos/i18533/Dog.java

@@ -1,5 +1,4 @@
 //> using javacOpt --enable-preview --source 17
-//> test: -jvm 17+
 
 package i18533;
 

Diff for: tests/pos/i18533/Pet.java

@@ -1,5 +1,4 @@
 //> using javacOpt --enable-preview --source 17
-//> test: -jvm 17+
 
 package i18533;