feat: support fitToPageEnabled and scaleFactor

[Alecyrus]

Description of Change

Support fitToPageEnabled and scaleFactor in WebContents.printToPDF(), fix #20435

Checklist

• PR description included and stakeholders cc'd
• npm test passes
• tests are changed or added
• relevant documentation is changed or added
• PR title follows semantic commit guidelines
• PR release notes describe the change in a way relevant to app developers, and are capitalized, punctuated, and past tense.

Release Notes

notes: Added the support of fitToPageEnabled and scaleFactor in WebContents.printToPDF()

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[release-clerk]

Release Notes Persisted

Added the support of fitToPageEnabled and scaleFactor in WebContents.printToPDF()

[EcotechBrad]

It appears that support for fitToPageEnabled is not supported in the print method.