LibJS: Convert all remaining non-Array tests to the new system :)

Author: https://github.com/mattco98
Commit: 15de2eda2b
Pull-request: https://github.com/SerenityOS/serenity/pull/2689
Reviewed-by: https://github.com/linusg

Libraries/LibJS/Tests/const-reassignment.js

@@ -1,3 +1,4 @@
+// I'm not sure how this test passed before the refactor, but it definitely doesn't work at all
 test.skip("reassignment to const", () => {
   const constantValue = 1;
   expect(() => {