fixing psalm and rector complaints

[brettmc]

• suppress some new psalm complaints
• apply x2 rector suggested fixes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.39%. Comparing base (d5f5aa7) to head (d6d6dfd).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1732      +/-   ##
============================================
+ Coverage     68.26%   68.39%   +0.12%     
  Complexity     2970     2970              
============================================
  Files           448      448              
  Lines          9029     9031       +2     
============================================
+ Hits           6164     6177      +13     
+ Misses         2865     2854      -11     

Flag	Coverage Δ
8.1	68.13% <100.00%> (?)
8.2	68.26% <100.00%> (?)
8.3	68.31% <100.00%> (?)
8.4	68.37% <100.00%> (?)
8.5	68.33% <100.00%> (+0.06%)	⬆️

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Files with missing lines	Coverage Δ
...Strategy/SemanticConventionSuppressionStrategy.php	100.00% <100.00%> (ø)
src/SDK/Trace/TracerProvider.php	100.00% <ø> (ø)

... and 8 files with indirect coverage changes

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