Fix/button Width Classes Rule

[jasperf]

This release adds the button-width-classes compliance rule to BaseRules, addressing a class of block validation failures that occur when pattern files express button percentage widths via inline styles rather than the CSS classes emitted by WordPress's core/button save() function. The rule detects wp:button blocks that carry a "width":N attribute in their block comment JSON but whose corresponding HTML outer <div> is missing one or both of the required has-custom-width and wp-block-button__width-{N} classes, or where the inner <a> element retains a width:{N}% inline style. Because WordPress's block save function writes width as classes on the outer wrapper — never as inline style — any mismatch causes the editor to report a block validation failure and prompt the user to attempt recovery. The version string in bin/pt-cli has been bumped to 2.2.3 to reflect this addition.

Rule Implementation:

• BaseRules::checkButtonWidthClasses() parses content line-by-line, identifies <!-- wp:button comments containing a "width":N attribute, and scans the immediately following HTML lines (up to two) for the corresponding wp-block-button wrapper div.
• Two distinct violation messages are emitted: one when the outer <div> is missing has-custom-width and/or wp-block-button__width-{N}, and a separate one when the <a> element retains a width:{N}% inline style, providing precise remediation guidance in each case.
• The new check is integrated into the existing check() pipeline between checkButtonClassNameOrder and checkCoverBlockMinHeight, maintaining consistent ordering of button-related validations.

Changelog and Versioning:

• CHANGELOG.md documents the new rule under [2.2.3] - 2026-05-13 with a detailed technical explanation of the WordPress save-function contract that the rule enforces.
• The application version constant in bin/pt-cli is updated from 2.0.0 to 2.2.3, aligning the runtime version string with the release history tracked in the changelog.

Files Changed:

• CHANGELOG.md (Modified)
• bin/pt-cli (Modified)
• src/Compliance/Rules/BaseRules.php (Modified)