[5.1] Followup convert mod_messages to service provider #42735

[heelc29]

Followup Pull Request for #42735 .

Summary of Changes

Fix the return value in case the exception is caught

Testing Instructions

code review

Old code -> count empty array -> 0:

joomla-cms/administrator/modules/mod_messages/mod_messages.php

Lines 27 to 34 in be506c0

	} catch (RuntimeException $e) {
	$messages = [];
	// Still render the error message from the Exception object
	$app->enqueueMessage($e->getMessage(), 'error');
	}
	$countUnread = \count($messages);

[Quy]

I have tested this item ✅ successfully on fcb9c2b

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[ceford]

I have tested this item ✅ successfully on fcb9c2b

Code review - looks fine to me.

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[Quy]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/42906.}

[bembelimen]

Thank you!