Twenty Nineteen: Fix font size and citation display for Pullquote block

[pitamdey]

In Theme Twenty Nineteen, Pullquote Block Text Decoration is not reflecting in frontend for citation but working fine in editor side
I have attached a screenshot for reference

[pitamdey]

Editor View

[pitamdey]

Frontend View

Trac ticket: https://core.trac.wordpress.org/ticket/61507

[viralsampat]

I have checked above mentioned issue and I have resolved it and added patch. Also, I have attached screenshot after resolved this issue.

[viralsampat]

After resolved issue Back-end:

[viralsampat]

After resolved issue front-end:

• Restores the default Pullquote paragraph font size to 49.5 (2.25em * 22px), which has been multiplied by 1.5 since WordPress 6.1.
• Sets the cite element to display: block for consistent spacing and text-decoration.

Trac 61507

Before patch: front end has extra-large font size, and the Pullquote does not honor the underline setting on the citation.

With patch: front end would reset the block's font size so the paragraph is 2.25em again, and the citation includes the underline according to the block option.

Editor with patch (which is the same as before):

Spacing comparison for citations of different lengths:

• Before patch, a one-line citation has more space above it than a citation that wraps to a second line.
• With the patch, both one-line and two-line citations have the same amount of space between them and the Pullquote paragraph.

Full images with each text decoration option:

• ​Front end before patch
• ​Front end with patch
• The editor displays these blocks the same way both ​before and ​after

[sabernhardt]

The font size is not directly related to the display property, but I wanted both to be fixed together.

PR 6945 includes the Sass and the two compiled stylesheets.

[karmatosed]

I am going to assign this to myself to test and see what can be done about looking to commit this. Thanks.

[karmatosed]

In 58630:

Twenty Nineteen: Fixes font size and citation display for Pullquote block.

The pullquote block text decoration was not the same front and within the editor. This resolves that and resets.

Props pitamdey, viralsampat, sabernhardt.
Fixes #61507.