RFR: 8327856: Convert applet test SpanishDiacriticsTest.java to a main program

[Phil Race]

On Tue, 12 Mar 2024 17:12:08 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

>> I misread it. If the text is `''o` instead of `ó`…
>
> What if we spell the conditions explicitly:
> 
> The text field should display ''o (i.e. two apostrophes and o without an acute), press Pass.
> If you see ó (i.e. o with an acute), press Fail.

I will reword it but the text is the same as was in the HTML file with just some minor grammatical changes in the surrounding text.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18208#discussion_r1521860016