refactor(emcn/toast): trim comments to concise TSDoc per project convention

Remove inline // and JSX {/* */} comments (the project documents with TSDoc
only) and condense multi-paragraph TSDoc to 1-3 lines across toast.tsx, plus
the stray inline comments in the console store and slack wizard. Behavior and
code are unchanged — verified the non-comment source is byte-identical.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/editor/components/sub-block/components/slack-setup-wizard/slack-setup-wizard.tsx

@@ -273,8 +273,6 @@ function StepCreate({ manifestJson, canCopy }: StepCreateProps) {
       setCopied(true)
       setTimeout(() => setCopied(false), 2000)
     } catch {
-      // Keep the failure inside the wizard rather than firing a toast that
-      // escapes to the screen corner.
       setCopyFailed(true)
     }
   }, [canCopy, manifestJson])