Fix check warnings in CI

[xtqqczze]

• SA1000: Spacing around keywords #1172
• SA1127: Generic type constraints should be on their own line
• SA1208: Using directive ordering
• SA1505: An opening brace should not be followed by a blank line
• SA1513: Closing brace should be followed by blank line #1173
• SA1515: Single-line comment should be preceded by blank line #1174
• SA1601: Partial elements should be documented #1175

[github-actions]

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