MDL-56761 theme: fix RTL styling for hover tooltip

theme/boost/scss/moodle/core.scss

@@ -2091,6 +2091,7 @@ ul {
         opacity: 0;
         visibility: hidden;
         position: absolute;
+        /*rtl:ignore*/
         left: 50%;
         top: calc(-50% - 5px);
         transform: translate(-50%, -50%);

theme/bootstrapbase/less/moodle/core.less

@@ -2359,6 +2359,7 @@ h3.sectionname .inplaceeditable.inplaceeditingon .editinstructions {
         opacity: 0;
         visibility: hidden;
         position: absolute;
+        /*rtl:ignore*/
         left: 50%;
         top: ~"calc(-50% - 5px)";
         transform: translate(-50%, -50%);

theme/bootstrapbase/style/moodle.css

@@ -2435,6 +2435,7 @@ h3.sectionname .inplaceeditable.inplaceeditingon .editinstructions {
   opacity: 0;
   visibility: hidden;
   position: absolute;
+  /*rtl:ignore*/
   left: 50%;
   top: calc(-50% - 5px);
   transform: translate(-50%, -50%);