fix: audio converting time - rc 4.7 [WPB-9705] 🍒

[github-actions]

This PR was automatically cherry-picked based on the following PR:

• fix: audio converting time - rc 4.7 [WPB-9705]  #3132

Original PR description:

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WPB-9705 [Android] App freezes and delays when sending voice messages

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• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

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What's new in this PR?

Cherry pick from fix for develop #3127

Issues

Converting audio file to m4a takes too long

Causes (Optional)

Bad user experience waiting for audio to be encoded

Solutions

• change audio encoding to wav
• introduce encoding state to be showed when user recorded long audio file

How to Test

1. Record long audio file (about 3mins)
2. After stop it should show Audio encoding message for few seconds
3. Send audio message

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[yamilmedina]

I think this PR is not necessary anymore :D