[BUG] Using enabledButtons does not change icons on click.

[misterblack0101]

Describe the bug
If I add a List<BuiltInButtons> to enabledButtons in Agora, to

1. Add a set of buttons based on call type (Audio call doesn't require the camera buttons).
2. Re-order the buttons.

then, the button toggle Icon change breaks. For ex. Pressing the mute button doesn't change the mic icon.

Steps to reproduce the behaviour:

1. Set a list of BuiltInButtons for enabledButtons.
2. Use all/some buttons in the above list. (Try the BuiltInButtons.toggleMic)
3. Try clicking the button, and check if the Icon changes for toggle on/off.

Expected behavior
It should change the icon on click.

Output for flutter doctor

Additional info

• OS: macOs 12.4
• agora_rtc_engine: ^5.2.0
• agora_rtm: ^1.1.1
• agora_uikit: ^1.0.1

[Meherdeep]

Same as issue #86