Fix SMAPI not enabled diagnostic

[erri120]

Resolves #1672.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 48.79%. Comparing base (2e72a5f) to head (95beaec).

❗ Current head 95beaec differs from pull request most recent head dc980b8

Please upload reports for the commit dc980b8 to get more accurate results.

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Additional details and impacted files

@@            Coverage Diff            @@
##           main    #1674       +/-   ##
=========================================
+ Coverage      0   48.79%   +48.79%     
=========================================
  Files         0      769      +769     
  Lines         0    26664    +26664     
  Branches      0     2025     +2025     
=========================================
+ Hits          0    13011    +13011     
- Misses        0    13249    +13249     
- Partials      0      404      +404     

Flag	Coverage Δ
Windows	48.66% <0.00%> (?)
clean_environment_tests	48.77% <0.00%> (?)
macOS	48.41% <0.00%> (?)

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Files	Coverage Δ
...ames.StardewValley/Emitters/MissingSMAPIEmitter.cs	0.00% <0.00%> (ø)

... and 768 files with indirect coverage changes