[bug] Android audio mode confusion

[furkanKotic]

Describe the bug
Normally when I join a room the sound comes from the speaker, but when I join another room and leave the last joined room the sound of the people in the first room starts coming from the earpiece instead of the speaker.

There is no problem with v2.4.2+hotfix.2. This problem occurs with v2.4.3 and later.

#746 I understand that it happened after this change.

To Reproduce
The scenario is as follows;

• Join a room. The sound starts coming from the speaker.
• Join the second room without leaving the first room. The sound continues to come from the speaker.
• Leave the second room. The sound starts coming from the earpiece.

Platform information

• Plugin version: v2.4.3 and later
• Flutter target OS: Android real device