improvement(chat): flip Gathering thoughts to past tense on completion

Author: waleedlatif1

apps/sim/lib/copilot/tools/tool-display.ts

@@ -305,6 +305,7 @@ const COMPLETED_VERB_REWRITES: Record<string, string> = {
   Editing: 'Edited',
   Executing: 'Executed',
   Finding: 'Found',
+  Gathering: 'Gathered',
   Generating: 'Generated',
   Getting: 'Got',
   Listing: 'Listed',