fix: crash on GrapheneOS when downloading certificate (WPB-7407)

[AndroidBob]

WPB-7407 [Android] Crash on graphene OS when downloading own or another users certificate

Cherry pick from the original PR:

• fix: crash on GrapheneOS when downloading certificate (WPB-7407) #2864

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⚠️ Conflicts during cherry-pick:
app/src/main/kotlin/com/wire/android/ui/home/messagecomposer/recordaudio/AudioMediaRecorder.kt
kalium

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What's new in this PR?

Issues

There is 2 issues:

• When downloading certificate when user is in GrapheneOS it would crash the app
• When downloading certificate it would download twice (double files)

Causes (Optional)

• Crash : we need to ask file writing permissions for users in GrapheneOS.
• double files : We generate the certificate file and was downloading the generated file again.

Solutions

• Crash : Add verification to ask users permission to write files into external storage (/Downloads folder)
• double files : remove second download of generated certificate file and change its name:

From:
To:

Testing

How to Test

• Login to environment with MLS + E2EI enabled
• Generate certificate
• Go to : Settings -> Devices -> Current Device -> Certificate Details -> 3 dots at top-right corner -> download
• Success message should appear, app should NOT crash and when checking /Downloads folder it should contain only 1 certificate file

[github-actions]

Test Results

878 tests  ±0   878 ✅ ±0   8m 47s ⏱️ - 6m 47s
120 suites ±0     0 💤 ±0 
120 files   ±0     0 ❌ ±0 

Results for commit 7a4da0b. ± Comparison against base commit c9069ba.

[github-actions]

APKs built during tests are available here. Scroll down to Artifacts!

[AndroidBob]

Build 4009 failed.