Typo in AssertLessThanOrEqualToEarliestScheduleEntryStart

[BacLuc]

⚠️ Potential issue | 🟡 Minor

Typo in user-facing message: "then" → "than".

"start-date can not be later then" should read "start-date can not be later than".

Proposed fix

-        $this->message = $message ?? $options['message'] ?? 'Due to existing schedule entries, start-date can not be later then {{ startDate }}';
+        $this->message = $message ?? $options['message'] ?? 'Due to existing schedule entries, start-date can not be later than {{ startDate }}';

📝 Committable suggestion

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        $this->message = $message ?? $options['message'] ?? 'Due to existing schedule entries, start-date can not be later than {{ startDate }}';

🤖 Prompt for AI Agents

In
`@api/src/Validator/Period/AssertLessThanOrEqualToEarliestScheduleEntryStart.php`
at line 12, The user-facing message in the
AssertLessThanOrEqualToEarliestScheduleEntryStart validator sets $this->message
with the string containing a typo ("then" instead of "than"); update the message
assigned to $this->message in that class to replace "then" with "than" so it
reads "start-date can not be later than {{ startDate }}".

Originally posted by @coderabbitai[bot] in #9013 (comment)

[BacLuc]

I already have a local branch which fixes this, as soon as #9013 (comment) is merged