chore: Fix ESLint warnings

[arjankowski]

This PR resolves ESLint warnings across the codebase ensuring a clean npm run lint state:

• replace obj.hasOwnProperty() with the safer Object.hasOwn() across all modules and commands
• replace complex Array#reduce calls with Object.assign spreads or simple loops (rule unicorn/no-array-reduce)
• switch Array#concat usage to the spread operator (rule unicorn/prefer-spread)
• decouple member access from await expressions for clearer debugging (rule unicorn/no-await-expression-member)
• Silence intentional test-skip warnings in tokens.test.js

[coveralls]

Pull Request Test Coverage Report for Build 20660931664

Details

• 67 of 74 (90.54%) changed or added relevant lines in 33 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.04%) to 85.543%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/commands/configure/environments/add.js	0	1	0.0%
src/commands/configure/environments/delete.js	0	1	0.0%
src/commands/configure/environments/set-current.js	0	1	0.0%
src/commands/configure/environments/update.js	0	1	0.0%
src/commands/configure/settings.js	0	3	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/commands/files/zip.js	1	81.03%

Totals
Change from base Build 20616794354:	-0.04%
Covered Lines:	4732
Relevant Lines:	5332

---

💛 - Coveralls

[KwiatkowskiML]

LGTM