Fixed `group` array mutation on call to validator middleware#274

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henrytwo wants to merge 1 commit intoTreeHacks:2023-root-v2from

henrytwo:henrytu/fix-validate-group

Commits on Jan 5, 2023

Fixed bug where global variable in `validateGroup` was mutated after every call to the middleware function, causing a "memory leak" in a sense.
henrytwo
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