RUMM-2038 Use safe context for directBootAware host apps

[xgouchet]

Fixes #854
Fixes #1116

What does this PR do?

Uses the createDeviceProtectedStorageContext to ensure Kronos works in all edge cases.
Note that the safe context should only be used for Kronos.

[codecov-commenter]

Codecov Report

Merging #1209 (17673d2) into develop (120224b) will decrease coverage by 0.02%.
The diff coverage is 80.00%.

@@             Coverage Diff             @@
##           develop    #1209      +/-   ##
===========================================
- Coverage    82.31%   82.29%   -0.02%     
===========================================
  Files          353      353              
  Lines        11795    11799       +4     
  Branches      2007     2009       +2     
===========================================
+ Hits          9708     9709       +1     
- Misses        1475     1476       +1     
- Partials       612      614       +2     

Impacted Files	Coverage Δ
...n/com/datadog/android/core/internal/CoreFeature.kt	90.98% <80.00%> (-0.25%)	⬇️
...n/com/datadog/android/v2/core/SdkInternalLogger.kt	73.08% <0.00%> (-7.69%)	⬇️
...ndroid/telemetry/internal/TelemetryEventHandler.kt	69.75% <0.00%> (-2.52%)	⬇️
...d/v2/core/internal/storage/FileEventBatchWriter.kt	95.24% <0.00%> (-2.38%)	⬇️
...rsistence/file/batch/PlainBatchFileReaderWriter.kt	88.24% <0.00%> (-0.98%)	⬇️
.../kotlin/com/datadog/android/v2/core/DatadogCore.kt	89.40% <0.00%> (-0.92%)	⬇️
...android/rum/internal/ndk/DatadogNdkCrashHandler.kt	86.70% <0.00%> (-0.49%)	⬇️
...android/log/internal/domain/DatadogLogGenerator.kt	95.97% <0.00%> (ø)
...droid/rum/tracking/FragmentViewTrackingStrategy.kt	75.00% <0.00%> (ø)
.../android/rum/internal/domain/scope/RumViewScope.kt	95.42% <0.00%> (+0.18%)	⬆️
... and 5 more

[apigirl]

just some small nits, otherwise looks good for docs

[0xnm]

Suggested change

	// When the host app uses the `directBootAware` flag on a file encrypted device,
	// the app can wake up during the boot sequence before the device is unlocked
	// This mean any file I/O or access to shared preferences will throw an exception
	// This safe context creates a device-protected storage which can be used for non sensitive
	// data. It should not be used to store the data captured by the SDK.
	// When the host app uses the `directBootAware` flag on a file encrypted device,
	// the app can wake up during the boot sequence before the device is unlocked
	// This mean any file I/O or access to shared preferences will throw an exception
	// This safe context creates a device-protected storage which can be used for non-sensitive
	// data. It should not be used to store the data captured by the SDK.