Fix single | to || for conditional checks to comply with Java S2638 standard

[ASangelina]

This PR addresses the Java S2638 standard, which recommends using the short-circuit operator || instead of the bitwise operator | for conditional checks. The following change was made:

Before:
if (localInputFuture == null | localExceptionType == null | localFallback == null // This check, unlike all the others, is a volatile read || isCancelled()) { return; }
After:
if (localInputFuture == null || localExceptionType == null || localFallback == null // This check, unlike all the others, is a volatile read || isCancelled()) { return; }

The use of || ensures that the evaluation short-circuits, improving performance and avoiding potential null pointer exceptions. This change helps to improve the safety and efficiency of the code by following recommended best practices.

Please review the changes and provide your feedback.

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[cpovirk]

This is intentional, but we should note that in AbstractCatchingFuture, too.

I will add that, in general, I have found most Sonar checks to be unhelpful, so we are unlikely to accept PRs except in cases in which there are actual risks of bugs or significant performance improvements. I'm sure that there are various Sonar checks that meet that standard, and maybe Sonar offers a way to prioritize those. I haven't used it enough to know.