RUM-6104 ensure UploadWorker uses the sdk instance name

[xgouchet]

What does this PR do?

When the UploadWorker is woken by the system, it reads the SDK Instance name from the WorkRequest input data, and tries to get the instance with that name.

However, the instance name was never sent meaning that for applications specifying an instance name would never find a relevant SDK.

Motivation

Fixes #2252

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.97%. Comparing base (908b45a) to head (cefc19c).
Report is 20 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2257      +/-   ##
===========================================
- Coverage    69.98%   69.97%   -0.01%     
===========================================
  Files          728      728              
  Lines        27063    27051      -12     
  Branches      4561     4560       -1     
===========================================
- Hits         18939    18927      -12     
- Misses        6841     6846       +5     
+ Partials      1283     1278       -5     

Files with missing lines	Coverage Δ
...n/com/datadog/android/core/internal/DatadogCore.kt	81.90% <100.00%> (+0.08%)	⬆️
...ore/internal/lifecycle/ProcessLifecycleCallback.kt	90.00% <100.00%> (+1.11%)	⬆️
...og/android/core/internal/utils/WorkManagerUtils.kt	91.18% <100.00%> (+0.27%)	⬆️
.../android/error/internal/DatadogExceptionHandler.kt	87.84% <100.00%> (ø)

... and 33 files with indirect coverage changes

[0xnm]

Shouldn't it be just @Test here? Is it needed to repeat it so many times?

[xgouchet]

You're right, i used it locally :D

[ambushwork]

Question: in the description of the PR it says before the fix, ".. meaning that for applications specifying an instance name would never find a relevant SDK." I wonder how UploadWorker can work correctly after a while of application running?