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/_base.less

@@ -226,7 +226,7 @@ body {
 
 @supports (overflow: overlay) {
   body {
-    overflow: overlay;
+    overflow: overlay; // stylelint-disable-line
     scrollbar-gutter: stable;
   }
 }

web_src/less/_font_i18n.less

@@ -89,7 +89,7 @@ each(@fonts, {
     font-family: @family;
     src: @src;
     font-weight: @weight;
-    unicode-range: ~"U+11??, U+2E80-4DBF, U+4E00-9FFF, U+A960-A97F, U+AC00-D7FF, U+F900-FAFF, U+FE00-FE6F, U+FF00-FFEF, U+1F2??, U+2????";
+    unicode-range: U+11??, U+2E80-4DBF, U+4E00-9FFF, U+A960-A97F, U+AC00-D7FF, U+F900-FAFF, U+FE00-FE6F, U+FF00-FFEF, U+1F2??, U+2????;
   }
 }
 

web_src/less/_review.less

@@ -70,7 +70,7 @@
   max-width: 1000px;
 
   @media @mediaSm {
-    max-width: auto;
+    max-width: none;
     padding: .75rem !important;
 
     .code-comment-buttons {

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;

web_src/less/modules/tippy.less

@@ -25,7 +25,7 @@
 }
 
 .tippy-box[data-theme="menu"] {
-  background-color: none;
+  background-color: transparent;
   color: var(--color-tooltip-text);
 }