fix(index): skip version checks for false boolean options

[Fdawgs]

Boolean options set to false are never passed to the underlying binary, so it is redundant doing version checking on them and throwing errors.

Probably a tiny performance boost in here as well.

Checklist

• Run npm test
• Commit message adheres to the Conventional commits style, following the @commitlint/config-conventional config

[Copilot]

Pull request overview

This PR avoids performing minVersion validation (and arg building) for boolean options explicitly set to false, since those flags are not passed to the underlying Poppler binaries anyway.

Changes:

• Update parseOptions() to continue early when encountering boolean options set to false, skipping both arg emission and version checks.
• Minor refactor of the boolean-option handling logic for clarity.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

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