The purpose of this change is to ensure that the quote block and the quote block cite inherits the text color from the parent block, if:
* The parent has a text color set in the block settings, and
* The quote block does not have a text color set in the block settings.
Follow-up to [43799], [56087].
Props poena, melchoyce, sabernhardt, mukesh27, apermo, SergeyBiryukov.
Fixes#51236.
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