fix(gatsby-remark-images): override all default styling with wrapperStyle

[florinpop17]

Addressing issue 12199 where the default values couldn't be overwritten.

[wardpeet]

Thank you for fixing this!

[gatsbot]

Holy buckets, @florinpop17 — we just merged your PR to Gatsby! 💪💜

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[sidharthachatterjee]

Published in gatsby-remark-images@3.0.9