Outline View: Let the "Find" function search QML IDs and property values too

Code

import QtQuick
import QtQuick.Controls.Basic

Window {
    id: root
    width: 800
    height: 600
    visible: true

    Button {
        id: btn_start
        text: "Start"
    }
    Button {
        id: btn_pause
        text: "Pause"
    }
    Button {
        id: btn_stop
        text: "Stop"
    }
    Button {
        text: "Anonymous"
    }
}

Steps to test

1. In Qt Creator, put the code above in the active *.qml file
2. Open the Outline View (https://doc.qt.io/qtcreator/creator-outline-view.html ) and ensure it has keyboard focus
3. Press Ctrl+F to open the "Find" bar within the Outline View, and search for various words

Outcomes
As of QtC 15.0:

• We get hits if we search for "Window", "Button", "width", and "text"
• However, we don't get any hits if we search for "root", "btn", "Anonymous"

Workaround
We could do the search in the Code Editor instead. When the result is found there, the Outline View automatically highlights the corresponding line too. However, this requires switching to a different pane.