fix: the test command's --tags option now also matches CheckGroups [sc-23699] (#1047)

* fix: the test command's --tags option now includes matching CheckGroups

This is the intended behavior, but an oversight in the code effectively
disabled it.

* fix: don't modify Check's tags directly, create a new array instead

Author: sorccu

Diff for: packages/cli/src/commands/test.ts

@@ -199,11 +199,11 @@ export default class Test extends AuthCommand {
         return filterByCheckNamePattern(grep, check.name)
       })
       .filter(([, check]) => {
-        const tags = check.tags ?? []
+        const tags = [...check.tags ?? []]
         const checkGroup = this.getCheckGroup(project, check)
         if (checkGroup) {
           const checkGroupTags = checkGroup.tags ?? []
-          tags.concat(checkGroupTags)
+          tags.push(...checkGroupTags)
         }
         return filterByTags(targetTags?.map((tags: string) => tags.split(',')) ?? [], tags)
       })