Use typography mixin for the editor panel

Author: patch0

src/assets/stylesheets/EditorPanel.scss

@@ -1,5 +1,6 @@
 @use "./rpf_design_system/spacing" as *;
 @use "./rpf_design_system/font-size" as *;
+@use "../../../node_modules/@raspberrypifoundation/design-system-core/scss/mixins/typography";
 
 // Scrollbar-width is needed from scrollbar to show in Chrome
 .editor-wrapper {
@@ -25,12 +26,14 @@
     }
 
     .cm-scroller {
+      @include typography.style-1();
+
       // Needed here for horizontal scroll
       overflow: auto;
       scrollbar-width: thin;
       overscroll-behavior-x: none;
       font-family: var(--wc-font-family-monospace);
-      line-height: var(--line-height-1-5);
+
 
       .cm-content {
         flex: 1;