Implement flash message when editing a default template

[estebangallego]

Issue & Reproduction Steps

When editing a default template for the first time, in some cases we will get a json_decode error or Server Error in the nightly build.

1. Click on Designer->Templates
2. Click on Edit Template within the Ellipsis menu of one of the Default Templates.
   If the error doesn't show up, click on a different template.

Solution

• Implement flash message similar to what we have when we create a Process from a Template.

How to Test

1. Click on Designer->Templates
2. Click on Edit Template within the Ellipsis menu of one of the Default Templates.
3. Make sure we don't get an error when editing a template and the flash message is included. (The template was created.)

Related Tickets & Packages

Ticket: FOUR-9718

Code Review Checklist

• I have pulled this code locally and tested it on my instance, along with any associated packages.
• This code adheres to ProcessMaker Coding Guidelines.
• This code includes a unit test or an E2E test that tests its functionality, or is covered by an existing test.
• This solution fixes the bug reported in the original ticket.
• This solution does not alter the expected output of a component in a way that would break existing Processes.
• This solution does not implement any breaking changes that would invalidate documentation or cause existing Processes to fail.
• This solution has been tested with enterprise packages that rely on its functionality and does not introduce bugs in those packages.
• This code does not duplicate functionality that already exists in the framework or in ProcessMaker.
• This ticket conforms to the PRD associated with this part of ProcessMaker.

[eiresendez]

Approved, please consider using Session::forget('alert') if it's not necessary to display an alert! This will also fix the issue with the "bad" alert generated in the "connector-send-email" package.

[estebangallego]

Approved, please consider using Session::forget('alert') if it's not necessary to display an alert! This will also fix the issue with the "bad" alert generated in the "connector-send-email" package.

Good point but in this case, I added the alert to reflect the same functionality as what we currently have when creating Processes or Processes from templates.
Example: When we create a Process from a template. or a regular process, we get a flash message saying The process was created.
In this case, I added The template that was created.