Upgrade to stylelint 15 (#22944)

- Upgrade stylelint and plugin
- Change ruleset to a explicit one, with all deprecated rules removed
- Fix new issues detected by value validation

For `overflow: overlay` see
https://github.com/stylelint/stylelint/issues/6667

web_src/less/markup/content.less

@@ -281,8 +281,6 @@
   table {
     display: block;
     width: 100%;
-    width: -webkit-max-content;
-    width: -moz-max-content;
     width: max-content;
     max-width: 100%;
     overflow: auto;