MDL-81384 theme_boost: centre help icon margin/padding.

lib/templates/help_icon.mustache

@@ -17,7 +17,7 @@
         }
     }
 }}
-<a class="btn btn-link p-0" role="button"
+<a class="btn btn-link p-0 me-2 icon-no-margin" role="button"
     data-container="body" data-toggle="popover"
     data-placement="{{#ltr}}right{{/ltr}}{{^ltr}}left{{/ltr}}" data-content="{{text}} {{completedoclink}}"
     data-html="true" tabindex="0" data-trigger="focus" aria-label="{{#str}} help {{/str}}">

theme/boost/scss/moodle/icons.scss

@@ -31,10 +31,9 @@ $iconsizes: map-merge((
 .icon {
     max-width: map-get($iconsizes, 4);
     max-height: map-get($iconsizes, 4);
-    margin: 0;
+    margin: 0 map-get($spacers, 2) 0 0;
     padding: 0;
     box-sizing: content-box;
-    margin-right: 0.5rem;
 
     &.spacer {
         margin-right: 0;

theme/boost/style/moodle.css

@@ -26234,10 +26234,9 @@ body.behat-site .action-menu .dropdown-subpanel-content.show {
 .icon {
   max-width: 24px;
   max-height: 24px;
-  margin: 0;
+  margin: 0 0.5rem 0 0;
   padding: 0;
   box-sizing: content-box;
-  margin-right: 0.5rem;
 }
 .icon.spacer {
   margin-right: 0;

theme/classic/style/moodle.css

@@ -26234,10 +26234,9 @@ body.behat-site .action-menu .dropdown-subpanel-content.show {
 .icon {
   max-width: 24px;
   max-height: 24px;
-  margin: 0;
+  margin: 0 0.5rem 0 0;
   padding: 0;
   box-sizing: content-box;
-  margin-right: 0.5rem;
 }
 .icon.spacer {
   margin-right: 0;