Enable Apps to call services when app shuts down in Dispose(Async)() and OnComplete of HA events

[FrankBakkerNl]

Breaking change

Proposed change

Make sure AppScopedHaContextProvider allow Service calls until the end of its DisposeAsync(), so that apps can still us until their eventqueue is cleared and pending background tasks have completed.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• The code compiles without warnings (code quality check)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration are added/changed:

• Documentation added/updated for http://netdaemon.xtz

[codecov]

Codecov Report

Attention: Patch coverage is 87.05882% with 11 lines in your changes missing coverage. Please review.

Project coverage is 81%. Comparing base (0315ea1) to head (9a642d8).

Files	Patch %	Lines
...l/NetDeamon.HassModel/Internal/QueuedObservable.cs	84%	8 Missing and 2 partials ⚠️
...n.HassModel/Internal/AppScopedHaContextProvider.cs	93%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@         Coverage Diff          @@
##           main   #1140   +/-   ##
====================================
- Coverage    81%     81%   -1%     
====================================
  Files       190     190           
  Lines      3890    3933   +43     
  Branches    478     477    -1     
====================================
+ Hits       3189    3222   +33     
- Misses      517     526    +9     
- Partials    184     185    +1     

Flag	Coverage Δ
unittests	81% <87%> (-1%)	⬇️

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[helto4real]

Nicely done with this man! I will make a alpha release and test it out before we do a release!!