What does this PR do?

Fixes inverted comparison logic in ScheduleExecutions.php that prevented scheduled executions from running. The condition was skipping executions that should execute and processing ones scheduled too far in the future.

Change:

// Before: skips executions within the interval (wrong)
if ($scheduledAt <= $intervalEnd) {
    continue;
}

// After: skips executions beyond the interval (correct)
if ($scheduledAt > $intervalEnd) {
    continue;
}

The logic now matches the pattern in ScheduleMessages.php and ScheduleFunctions.php, where scheduledAt > threshold correctly identifies items not yet ready for processing.

Test Plan

• Verified fix aligns with comparison logic in ScheduleMessages.php:38 and ScheduleFunctions.php:64-66
• Code review and security scan passed with no issues

Related PRs and Issues

• Fix: Prevent job loss on container shutdown for delayed executions #10922

Checklist

• Have you read the Contributing Guidelines on issues?
• If the PR includes a change to an API's metadata (desc, label, params, etc.), does it also include updated API specs and example docs?

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