Fix imported Override attribute handling

[cameron1729]

Methods marked with #[Override] were still triggering some sniffs when the attribute was imported with use Override; because the checks were looking for exactly \Override and missed imported usages like #[Override].

This patch updates the sniff to use the qualified attribute name instead of the raw token.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.27%. Comparing base (5927fc7) to head (ba7ee78).

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #225      +/-   ##
============================================
- Coverage     98.27%   98.27%   -0.01%     
+ Complexity      994      991       -3     
============================================
  Files            42       42              
  Lines          2961     2952       -9     
============================================
- Hits           2910     2901       -9     
  Misses           51       51              

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[jrchamp]

I love that this patch converts multiple instances of code duplication to use the utility helper method that is designed for the task. ❤️