[4.3] Remove last style

[jgerman-bot]

New language relevant PR in upstream repo: joomla/joomla-cms#39491 Here are the upstream changes:

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diff --git a/administrator/language/en-GB/com_templates.ini b/administrator/language/en-GB/com_templates.ini
index 5676096fd17c..8f61daf198e2 100644
--- a/administrator/language/en-GB/com_templates.ini
+++ b/administrator/language/en-GB/com_templates.ini
@@ -52,7 +52,7 @@ COM_TEMPLATES_DIFF_OVERRIDE="Override"
 COM_TEMPLATES_DIRECTORY_NOT_WRITABLE="The template folder is not writable. Some features may not work."
 COM_TEMPLATES_ERROR_ASSET_FILE_DELETE="The file joomla.asset.json can't be deleted. Make changes in the editor if you want to change the file."
 COM_TEMPLATES_ERROR_ASSET_FILE_INVALID_JSON="The joomla.asset.json file doesn't contain valid JSON, aborting save."
-COM_TEMPLATES_ERROR_CANNOT_DELETE_LAST_STYLE="Can't delete the last style of a template."
+COM_TEMPLATES_ERROR_CANNOT_DELETE_LAST_STYLE="Can't delete the last style of a template. Did you intend to <a href=\"index.php?option=com_installer&view=manage&filter[type]=template\" class=\"alert-link\">uninstall</a> the template?"
 COM_TEMPLATES_ERROR_CANNOT_UNSET_DEFAULT_STYLE="Can't unset default style."
 COM_TEMPLATES_ERROR_COULD_NOT_COPY="Unable to copy template files to temporary folder."
 COM_TEMPLATES_ERROR_COULD_NOT_INSTALL="Unable to install new template from temporary folder."