Add Bluetooth adapter available check in RouterService for spp error notification

[JulianKast]

Fixes #1661

This PR is [ready] for review.

Risk

This PR makes [no / minor / major] 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

Unit Tests

n/a

Core Tests

Run test 9.008 in the 5.3 SDL_Android Test Plan on sheet Multiplexing Security Tests.

Core version / branch / commit hash / module tested against: Synce 3.0
HMI name / version / branch / commit hash / module tested against: Sync 3.0

Summary

Added Bluetooth adapter available check to RouterService for spp error notification. This prevents a rare edge case where when having connected Bluetooth and USB, you keep turning on and off Bluetooth, you can get the spp error notification.

Changelog

Bug Fixes

• [Added Bluetooth adapter available check to RouterService for spp error notification.

CLA

• I have signed the CLA

[codecov]

Codecov Report

Merging #1766 (03880c4) into develop (0bda034) will increase coverage by 0.00%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             develop    #1766   +/-   ##
==========================================
  Coverage      54.37%   54.38%           
- Complexity      5498     5500    +2     
==========================================
  Files            562      562           
  Lines          25466    25466           
  Branches        3317     3317           
==========================================
+ Hits           13847    13849    +2     
+ Misses         10360    10358    -2     
  Partials        1259     1259           

Impacted Files	Coverage Δ
...om/smartdevicelink/transport/SdlRouterService.java	11.09% <0.00%> (ø)
...rtdevicelink/streaming/video/SdlRemoteDisplay.java	51.21% <0.00%> (ø)
...nk/managers/audio/AudioDecoderCompatOperation.java	79.54% <0.00%> (+4.54%)	⬆️