WIP: Trac-27994: Bypass plugin file exists check when user visits plugin.php

[vishalkakadiya]

Details

This PR will fix the first step of the track ticket related to bypassing the plugin file exists check, so if the user has multiple WP instances running, working with various branches and on renaming the plugin directory, the active plugins will not be directly deactivated on visiting wp-admin/plugins.php

Next steps

As discussed in the ticket, we need to implement logic to show all the plugins in the list which have been renamed or removed, and the admin can manually deactivate those plugins. From the technical side, we need to call deactivate_plugins() and pass the plugin file's path, which is removed or renamed, to remove that from the active plugin's list.

Trac

Trac ticket: https://core.trac.wordpress.org/ticket/27994

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[github-actions]

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