Block Styles: Revert changing default overflow-wrap to all headers, lists, and paragraphs

[arthur791004]

What?

As #34222 tries to fix the overflow problem for the long strings of text without spaces, it changes the default overflow-wrap behavior to all headers, lists, and paragraphs and leads to some side effects.

Why?

As it changes the default behavior to all headers, lists, and paragraphs and leads to some side effects. See #34222 (comment), #34222 (comment), #34222 (comment)

How?

Revert the change of the default overflow-wrap behavior to all headers, lists, and paragraphs.

Testing Instructions

1. Create or Edit a post
2. Insert the following blocks
   • h1 through h6
   • ol and ul
   • p
3. Make sure the overflow-wrap style doesn't affect these blocks.

Screenshots or screencast

[jffng]

Thank you, I think this revert makes sense.

For the original use case — a very long string of text with no spaces — I don't think breaking the word to prevent overflow warrants changing the default behavior for all list, paragraphs, and heading elements.

cc @jasmussen for a gut check.

[jasmussen]

It seems good to let themes handle this 👍 👍

[arthur791004]

Thanks for your quick review 👍