[Bug] [Segmentation]Hex color code field no longer appears after saving a segment color #6150

Describe the Bug

The Segment Color dialog does not consistently allow users to access the Hex color code field.

1. Clicking the color bar expands the color editor and displays the RGBA values. However, there is no option to switch back to the Hex color code view, preventing users from entering or editing the color using a hexadecimal color code.

2. When the Segment Color dialog is first opened, the Hex color code field is displayed. If the user clicks Cancel and reopens the dialog, the Hex field is still available. However, after the user clicks Save, reopening the dialog displays only the RGBA values. The Hex color code field is no longer shown, leaving no way to edit the color using a hexadecimal color code.

Steps to Reproduce

1. Open the Segment Color dialog.
2. Click the color bar to expand the color editor: Observe that the editor displays the RGBA values.
3. Try to switch back to the Hex value input, there is no option to switch back to the Hex color code view.
4. Click Cancel
5. Open the Segment color dialog again
6. Confirm that the Hex color code is still displayed.
7. Click Save.
8. Open the Segment Color dialog again.

The current behavior

1. After the user displays the RGBA values, there is no option to switch back to the Hex color code view.
2. After the user clicks Save, the Hex color code field is no longer displayed. Only the RGBA values are available.

The expected behavior

1. Users should be able to switch between the RGBA and Hex color code views at any time while the Segment Color dialog is open.
2. The Hex color code field should remain available every time the Segment Color dialog is opened, regardless of whether the user previously clicked Save or Cancel.

System Information

C:\Windows\System32>npx envinfo --system --browsers

System:
OS: Windows 11 10.0.26200
CPU: (8) x64 Intel(R) Core(TM) Ultra 5 226V
Memory: 3.98 GB / 15.67 GB
Browsers:
Chrome: 150.0.7871.115
Edge: Spartan (24.13.1), Chromium (24.13.1), ChromiumDev (24.13.1)