[4.4] process fields on fulltext

[brianteeman]

Pull Request for Issue #42740 .

Summary of Changes

Testing Instructions

Add a field to the content of an article eg `{{field 74} after the readmore

creat an override of an article view to restructure the content.
For example seperate the intro and full text and position the article image in between.

<?php echo $this->item->introtext; ?>
....
<?php echo LayoutHelper::render('joomla.content.full_image', $this->item); ?>
...
<?php echo $this->item->fulltext; ?>

Actual result BEFORE applying this Pull Request

When displayed on the site the field is not processed and is displayed as `{field 74}

Expected result AFTER applying this Pull Request

Field correctly displayed

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed

[angieradtke]

I have tested this item ✅ successfully on 27750bb

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[drmenzelit]

I have tested this item ✅ successfully on 27750bb

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/42744.}

[alikon]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/42744.}

[MacJoom]

Thanks!

[angieradtke]

Cool , thanks for fixing so fast.