[4.3] Remove last style

[brianteeman]

PR for #36217

Summary of Changes

Adds an action to the error message

Testing Instructions

Create a child template of cassiopeia called fred
Go to the template styles and try to delete the template style for cassiopeia_fred

Actual result BEFORE applying this Pull Request

Expected result AFTER applying this Pull Request

Message now has a link

Link goes to the extension manage view prefiltered for templates

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

[ReLater]

I have tested this item ✅ successfully on 19c2650

---

_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/39491.}

[viocassel]

I have tested this item ✅ successfully on a7e31b8

---

_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/39491.}

[ReLater]

I have tested this item ✅ successfully on a7e31b8

---

_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/39491.}

[Quy]

RTC

---

_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/39491.}

[wilsonge]

Thanks!

[brianteeman]

thx