Fix padding and margin CSS property handling

[oges-asset067]

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[williamdes]

Please provide an example code to trigger the bug
Before and after pdfs can help too
See the examples/ folder

[nicolaasuni]

Thank you very much, @oges-asset067, for the CSS padding and margin fix - it is genuinely appreciated.

TCPDF 6 is now deprecated and no further changes will be merged into this repository. Please see the pinned issue Thank You - and the Future of TCPDF for the full explanation and the path forward.

CSS layout handling has been substantially redesigned in tc-lib-pdf. If you are able to reproduce the padding or margin issue there, feel free to open a PR or issue in that repository. If you need any help adapting your fix to the new library, please open a discussion and I will do my best to assist.

I am leaving this PR open in case you or anyone else wishes to continue the discussion, but it is unlikely that this PR will ever be merged.

Thank you again for your patience and understanding.