[4.2] PHP8.2 deprecated dynamic properties

[heelc29]

Summary of Changes

The creation of dynamic properties is deprecated

https://www.php.net/manual/en/migration82.deprecated.php#migration82.deprecated.core.dynamic-properties

Testing Instructions

Open frontend where mod_articles_latest and/or mod_articles_news are displayed

Actual result BEFORE applying this Pull Request

PHP Deprecated: Creation of dynamic property Joomla\Module\ArticlesLatest\Site\Dispatcher\Dispatcher::$helper is deprecated in libraries/src/Helper/HelperFactoryAwareTrait.php on line 61
PHP Deprecated: Creation of dynamic property Joomla\Module\ArticlesNews\Site\Dispatcher\Dispatcher::$helper is deprecated in libraries/src/Helper/HelperFactoryAwareTrait.php on line 61

Expected result AFTER applying this Pull Request

No deprecated message

Link to documentations

Please select:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed

ping @laoneo who introduced helper factory aware interface in #37445
I'm not sure if this the "right" fix for b/c, also the variable names of the interface and trait do not match:

joomla-cms/libraries/src/Helper/HelperFactoryAwareInterface.php

Line 32 in e9b9263

public function setHelperFactory(HelperFactory $helper);

joomla-cms/libraries/src/Helper/HelperFactoryAwareTrait.php

Line 59 in e9b9263

public function setHelperFactory(HelperFactory $helperFactory)

[laoneo]

This is ok like that. Was probably a copy paste error at that time.

[laoneo]

I have tested this item ✅ successfully on 986bdb3

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[carlitorweb]

I have tested this item ✅ successfully on 986bdb3

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/39503.}

[Quy]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/39503.}

[HLeithner]

thanks

[MarkRS-UK]

Presumably this didn't get into 4.2.7? Still seems to be a problem on 4.3.1. I'm seeing

Deprecated: Creation of dynamic property JFormFieldMediaJce::$mediatype is deprecated in <mySite>/libraries/src/Form/FormField.php on line 591