feat: show text-value-toggle tooltip depending on visible value

[FineFindus]

Description

Changes the text-value-toggle tooltip-text to either display Show Hex or Show Color depending on which child is currently visible.

Depends on #789

Type of change

• Bugfix (Change which fixes a issue)
• New feature (Change which adds new functionality)
• Enhancement (Change which slightly improves existing code)
• Breaking change (This change will introduce incompatibility with existing functionality)

Changelog

• Improved tooltip for toggling color values

Testing

• I have tested my changes and verified that they work as expected

How to test the changes

1. Open the app
2. View tooltip of the text-value-toggle button
3. Click the text-value-toggle button
4. Notice how the tooltip changes