Enable no-else-return (with allowElseIf: false) and unicorn/no-lonely-if
as errors in .oxlintrc.json and fix all 131 pre-existing violations
(91 no-else-return, 40 unicorn/no-lonely-if) across 98 files.
The no-else-return violations were fixed with the oxlint autofix
(iterated to a fixpoint, plus two else-if chains that required
--fix-dangerously) followed by Prettier formatting. One comment dropped
by the autofix in lib/modules/manager/pub/artifacts.ts was restored
manually. The unicorn/no-lonely-if violations were merged by hand,
preserving comments and coverage-ignore hints.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Sebastian Poxhofer