fix: save to notebook toast content in next line

[wanglam]

Description

Move toast content to the same line with icon

Before:

After:

Issues Resolved

[List any issues this PR will resolve]

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (1d63cb8) 92.83% compared to head (a13a03e) 92.94%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #85      +/-   ##
==========================================
+ Coverage   92.83%   92.94%   +0.11%     
==========================================
  Files          43       45       +2     
  Lines        1033     1092      +59     
  Branches      241      254      +13     
==========================================
+ Hits          959     1015      +56     
- Misses         73       76       +3     
  Partials        1        1              

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