fix(gatsby): fix some css HMR edge cases (#29839)#29865

Merged

vladar merged 1 commit intorelease/3.0from backport-3.0-29839

Mar 1, 2021

+318-13

Commits on Mar 1, 2021

fix(gatsby): fix some css HMR edge cases (#29839 )

pieh
authored and
vladar
committed