feat: Add a note node to the agent canvas #2767 (#2768)

### What problem does this PR solve?

feat: Add a note node to the agent canvas #2767

### Type of change

- [ ] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [ ] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):

web/src/locales/en.ts

@@ -985,6 +985,9 @@ The above is the content you need to summarize.`,
       startDate: 'Start date',
       endDate: 'End date',
       keyword: 'Keyword',
+      note: 'Note',
+      noteDescription: 'Note',
+      notePlaceholder: 'Please enter a note',
     },
     footer: {
       profile: 'All rights reserved @ React',