Refactor code for improved readability and consistency across multiple files

- Updated formatting in `drawing_toolbar.dart` for better readability, including breaking long lines and ensuring consistent indentation.
- Enhanced the `recipient_selector_sheet.dart` by adjusting line breaks and improving the layout of text styles.
- Refactored `sar_update_sheet.dart` to improve readability, including restructuring widget layouts and ensuring consistent formatting.
- Cleaned up imports and removed unnecessary lines in `widget_test.dart`.

.claude/settings.local.json

@@ -21,7 +21,8 @@
       "Bash(do)",
       "Bash(wc:*)",
       "Bash(for lang in de es fr it hr sl)",
-      "Bash(do echo \"=== $lang ===\")"
+      "Bash(do echo \"=== $lang ===\")",
+      "Bash(flutter --version:*)"
     ],
     "deny": [],
     "ask": []