Fix codegen bug from breaking HA 2022.4.1

[helto4real]

Breaking change

Proposed change

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
• There is no commented out code in this PR.
• I have followed the [development checklist][dev-checklist]
• The code compiles without warnings (code quality chek)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

[codecov-commenter]

Codecov Report

Merging #29 (6b0bd3a) into dev (7ef8f39) will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              dev      #29      +/-   ##
==========================================
+ Coverage   62.53%   62.57%   +0.04%     
==========================================
  Files         179      179              
  Lines        6667     6667              
  Branches      927      927              
==========================================
+ Hits         4169     4172       +3     
+ Misses       2162     2159       -3     
  Partials      336      336              

Flag	Coverage Δ
unittests	62.57% <ø> (+0.04%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
....App/Common/Reactive/ObservableExtensionMethods.cs	65.21% <0.00%> (+13.04%)	⬆️

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[coveralls]

Pull Request Test Coverage Report for Build 2140848069

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 63.186%

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Totals
Change from base Build 1967472729:	0.03%
Covered Lines:	4504
Relevant Lines:	6666

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💛 - Coveralls