smarty5 - implode is deprecated

[demeritcowboy]

Overview

Implode modifier is deprecated in smarty 5

Alternate to #30932 because can't just use the replacement if need to work with smarty 4 too.

Before

1. Create a tagset (not a bare tag) for cases.
2. Error message: Deprecated: Using implode is deprecated. Use join using the array first, separator second
3. On manage case add one or more of the tagset tags to the case.
4. More error messages: Deprecated: Using implode is deprecated. Use join using the array first, separator second

After

Technical Details

Reason given at smarty-php/smarty#939 (comment)

Comments

There are other instances this just fixes one that was also coming up in some of my tests.

[civibot]

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[seamuslee001]

seems fine to me