The button colour is not maintained on pushing another button

[gjwgit]

Describe the Bug

On startup; tap the START button; it turns blue.

But then tap INTRO or GUIDED they don't turn blue even though they initiate their session.

On startup and tap INTRO or GUIDED they do not turn blue!

On either scenario they do turn blue when I press PAUSE.

To Reproduce

Steps to reproduce the behavior:

1. Start the app
2. Tap START

3. Now tap INTRO to interrupt the current session and start an INTRO session

4. Notice START is blue and INTRO is no even though the intro message is playing and we have an intro session.
5. Now tap PAUSE

6. Notice INTRO is now blue.

Expected Behaviour

Expect INTRO to be blue.

Context

Where has the issue been observed:

• Android
• Chrome
• iOS
• Linux
• macOS
• Web
• Windows

[Add any other context about the problem here.]

App Version: 1.8.9
Flutter Version: 3.41.4

Closing Criteria

Checklist for closing the issue:

• No errors from make prep
• All tests pass make qtest
• Pressed button is blue.