Fix Plugin and Template name validation #15349
Merged
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What does it do?
Expands the qualifying character patterns for Template and Plugin names to prevent breaking sites during upgrade.
Why is it needed?
PR #15146 reduced the available characters in these non-callable element names. This breaks older sites that used common character patterns in their names.
How to test
Attempt to add additional strings to a plugin or template names. It still blocks callable code, but allows commonly used special characters.
Related issue(s)/PR(s)
issue #15323
supercedes #15348