Remove size parameter from user hosted log messages

[fractalwrench]

Goal

Removes the size parameter from user hosted log messages as we will calculate this on the backend & the attribute was unnecessary

Testing

Updated existing tests.

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 85.46%. Comparing base (76f1340) to head (62f5d66).

Files with missing lines	Patch %	Lines
...embracesdk/internal/logs/attachments/Attachment.kt	87.50%	1 Missing ⚠️
...mbracesdk/internal/api/delegate/LogsApiDelegate.kt	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@                      Coverage Diff                       @@
##           embrace-hosted-attachments    #1821      +/-   ##
==============================================================
- Coverage                       85.48%   85.46%   -0.02%     
==============================================================
  Files                             474      474              
  Lines                           11091    11083       -8     
  Branches                         1666     1665       -1     
==============================================================
- Hits                             9481     9472       -9     
  Misses                            869      869              
- Partials                          741      742       +1     

Files with missing lines	Coverage Δ
...k/internal/logs/attachments/AttachmentErrorCode.kt	100.00% <ø> (ø)
...sdk/internal/logs/attachments/AttachmentService.kt	100.00% <ø> (ø)
...main/java/io/embrace/android/embracesdk/Embrace.kt	86.95% <100.00%> (ø)
.../java/io/embrace/android/embracesdk/EmbraceImpl.kt	76.79% <ø> (-0.13%)	⬇️
...embracesdk/internal/logs/attachments/Attachment.kt	96.55% <87.50%> (-0.51%)	⬇️
...mbracesdk/internal/api/delegate/LogsApiDelegate.kt	86.51% <0.00%> (+1.12%)	⬆️

... and 1 file with indirect coverage changes