Remove app instances in plugins for layout overrides

[laoneo]

User description

joomla/joomla-cms#44647

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PR Type

Documentation

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Description

• Added migration documentation for the removal of $app variable in plugins, specifically in the plugins/tmpl folder
• Provided clear guidance on using $this->getApplication() instead of $this->app
• Included code examples to demonstrate the correct migration path
• Referenced the related PR for further context

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Changes walkthrough 📝

	Relevant files
Documentation	removed-backward-incompatibility.md Document removal of app variable in plugins layout overrides migrations/54-60/removed-backward-incompatibility.md Added documentation about the removal of $app variable in plugins Explained the replacement of $this->app with $this->getApplication() Included code examples showing the old and new way to access the application instance +13/-0

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PR Reviewer Guide 🔍

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⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Documentation Clarity The migration guide should clarify if this change affects all plugin types or specific ones, and whether this is a breaking change that requires immediate action

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