fix: Merge environment-level annotations into top level in manifest

[WillDaSilva]

Closes #7330

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[codecov]

Codecov Report

Merging #7331 (b7bc6cd) into main (85b5f2d) will decrease coverage by 0.01%.
The diff coverage is 33.33%.

❗ Current head b7bc6cd differs from pull request most recent head 583fcf2. Consider uploading reports for the commit 583fcf2 to get more accurate results

@@            Coverage Diff             @@
##             main    #7331      +/-   ##
==========================================
- Coverage   89.01%   89.00%   -0.01%     
==========================================
  Files         293      293              
  Lines       21682    21685       +3     
  Branches     2428     2429       +1     
==========================================
+ Hits        19300    19301       +1     
- Misses       2009     2010       +1     
- Partials      373      374       +1     

Impacted Files	Coverage Δ
src/meltano/core/manifest/manifest.py	93.02% <33.33%> (-1.43%)	⬇️
src/meltano/cli/compile.py	89.47% <0.00%> (ø)

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