Hydra/Helper/CatalystUtils: default trim arg to empty string

12:34:12 hydra-server.1 | Use of uninitialized value $s in substitution (s///) at /home/vin/workspace/vcs/hydra/src/script/../lib/Hydra/Helper/CatalystUtils.pm line 283, <$fh> line 1.

Created by  Cole Helbling  on November 30, 2021
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