I tested the command `javadoc --allow-script-in-comments -d ./docs User.java` on the attached sample file. The output shows errors:

```
Loading source file User.java...
Constructing Javadoc information...
Building index for all the packages and classes...
Standard Doclet version 24-ea+27-3551
Building tree for all the packages and classes...
Generating ./docs/User.html...
User.java:15: error: malformed HTML
         * if (monthDiff < 0 ||
                             ^
User.java:16: error: bad HTML entity
         * (monthDiff === 0 && today.getDate() > birthDate.getDate())) {
                                      ^
User.java:16: error: bad HTML entity
         * (monthDiff === 0 && today.getDate() > birthDate.getDate())) {
                                       ^
```

This translates into malformed HTML output like:

```
<div class="block">The method calculates a driver's age and checks if they meet
 the minimum age requirement.

 <script>
   function isEligible(birthDateString) {
     const birthDate = new Date(birthDateString);
     const today = new Date();
     const age = today.getFullYear() - birthDate.getFullYear();
     const monthDiff = today.getMonth() - birthDate.getMonth();
     if (monthDiff <span class="invalid-tag">invalid input: '&lt;'</span> 0 ||
           (monthDiff === 0 <span class="invalid-tag">invalid input: '&amp;'</span><span class="invalid-tag">invalid input: '&amp;'</span> today.getDate() &gt; birthDate.getDate())) {
       return age - 1;
     }
     return age;
   }
   console.log(isEligible("1990-04-15"))
 </script></div>
</section>
```

I tried the same with OpenJDK 21, 22, 23 and got the same results.