Bugfix/issue 1835 AlertManager File upload fix

[JulianKast]

Fixes #1835

This PR is [ready] for review.

Risk

This PR makes [no] API changes.

Testing Plan

• I have verified that I have not introduced new warnings in this PR (or explain why below)
• I have run the unit tests with this PR
• I have tested this PR against Core and verified behavior (if applicable, if not applicable, explain why below).
• I have tested Android, Java SE, and Java EE

Unit Tests

Unit test were updated in PresentAlertOperationTest.

Core Tests

Test sending Alert with Image via ScreenManager and verify that the image correctly appears.

Core version / branch / commit hash / module tested against: Manticore
HMI name / version / branch / commit hash / module tested against: Manticore

Summary

Changed check fileManager.hasUploadedFile to fileManager.fileNeedsUpload.

Changelog

Bug Fixes

• Fixes incorrect conditional statement when creating AlertRPC so Images will appear correctly

CLA

• I have signed the CLA

[codecov]

Codecov Report

Merging #1836 (425e9f6) into develop (b99a2ca) will increase coverage by 0.01%.
The diff coverage is 51.64%.

❗ Current head 425e9f6 differs from pull request most recent head 8479e86. Consider uploading reports for the commit 8479e86 to get more accurate results

@@              Coverage Diff              @@
##             develop    #1836      +/-   ##
=============================================
+ Coverage      54.04%   54.05%   +0.01%     
- Complexity      5532     5537       +5     
=============================================
  Files            562      562              
  Lines          25821    25869      +48     
  Branches        3398     3415      +17     
=============================================
+ Hits           13954    13983      +29     
- Misses         10596    10605       +9     
- Partials        1271     1281      +10     

Impacted Files	Coverage Δ
...martdevicelink/transport/SdlBroadcastReceiver.java	3.02% <ø> (ø)
...tdevicelink/transport/SdlRouterStatusProvider.java	0.00% <0.00%> (ø)
...link/transport/USBAccessoryAttachmentActivity.java	0.00% <0.00%> (ø)
...managers/screen/TextAndGraphicUpdateOperation.java	70.88% <51.42%> (-0.27%)	⬇️
...ink/managers/screen/BaseTextAndGraphicManager.java	63.29% <61.53%> (-0.88%)	⬇️
...icelink/managers/screen/PresentAlertOperation.java	58.62% <70.00%> (+2.67%)	⬆️
...anagers/lifecycle/BaseSystemCapabilityManager.java	67.76% <75.00%> (+0.08%)	⬆️
...nk/managers/audio/AudioDecoderCompatOperation.java	75.00% <0.00%> (-4.55%)	⬇️

[ChloeMJM]

Remove unused imports.