Fix issue #535 for hiding the keyboard

[Varsha-Kulkarni]

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https://github.com/patilshreyas/NotyKT/blob/master/CONTRIBUTING.md

Summary

When a new note is saved or an existing note is edited successfully, the keyboard was not being dismissed.
This fixes the issue #535

Description for the changelog

• After successful login, when navigated to AddNewNoteFragment/NoteDetailFragment to add or edit a note, once successfully saving the note when navigated back to NotesListFragment, the soft keyboard is retained. The issue is fixed in this PR.

Checklist

• Build and linting is passing.
• This change is not breaking existing flow of a system.
• I have written test case for this change.
• This change is tested from all aspects.
• Implemented any new third-party library (Which not existed before this change).

[PatilShreyas]

Thanks, @Varsha-Kulkarni for raising this PR. It looks good to me 👍🏻. Just a question, the same implementation is required for compose app?

[Varsha-Kulkarni]

On composeapp, when we add a new note, keyboard is dismissed on saving and navigating back, but when we edit existing it isn't. Also we can use LocalSoftwareKeyboardController to hide keyboard, right?

[PatilShreyas]

Yes