Open search bar prevents undo button showing up

[japusjoy]

In portrait mode the undo button does not show up if changes to the node text are made while the search bar is open.

version 6.17.0 com.simplemobiletools.notes.pro versionCode 114 on Android 14

Steps to reproduce:

• create or open a text note
• have it saved (so that the undo button is hidden)
• open up the search bar
• modify note content
• even if the search bar gets dismissed the undo button wont be visible

That hurts especially when you press backspace while expecting being in search mode but cursor jumped into the note, e.g. when pressing return in the search box.