Bug 510606

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SUMMARY
The spell checker does not work in Sticky Notes, even though it has been enabled in the KDE settings and the Hunspell package with the necessary languages has been installed (I'm using Fedora 42).

STEPS TO REPRODUCE
1. Opens sticky note;
2. Type any text;
3. Observe if misspelled word are underlined in red acorrding to the language package (e.g. Hunspell) installed on your system.

OBSERVED RESULT
- The spell checker does not work in Sticky Notes, even though it has been enabled in the KDE settings and the Hunspell package with the necessary languages has been installed (I'm using Fedora 42).

EXPECTED RESULT
- Automatically flag misspelled words by underlining them in red;
- When right-clicking into the misspelled word, show options for correct words;
- Identify misspelled words according to the language packages installed on the user's KDE system;
- Identify multiple languages written in the same note.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: Fedora 42
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.19.0
Qt Version: 6.9.2i

ADDITIONAL INFORMATION
If this isn't a bug, please consider adding it at some point. Many people use the widget for daily notes, and the spell check feature would be very useful to users. Thank you for your excellent work!