Dismiss keyboard after changing the note title #1259

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Describe the bug

When viewing a note there is an option to click on the title in the action bar to change the name of the note.
This opens a modal and the keyboard.
After "saving" or "canceling" the title change, the modal is closed while the keyboard remains open and is not discarded.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Home Screen'
2. Click on 'some note'
3. Click on the title in the action bar
4. Click on cancel or save (you don't need to change something)
5. See the error - keyboard is still present (probably okay in edit mode, but no benefit in view mode.)

Expected behavior
The keyboard should automatically disappear after finishing the title change.

Screenshots

Smartphone (please complete the following information):

• Nextcloud Notes-Version F-Droid or Play Store: 3.4.8
• Android-Version: 9
• Device: Huawei P10
• Keyboard: Microsoft Swift (personal opinion: should also work with Google Keyboard or any other)