fix(material-experimental/mdc-list): use body-1 rather than subtitle-1 typography for list items (#24417)

* fix(material-experimental/mdc-list): use body-1 rather than subtitle-1 typography for list items

* fixup! fix(material-experimental/mdc-list): use body-1 rather than subtitle-1 typography for list items

Author: mmalerba

src/material-experimental/mdc-list/_list-theme.scss

@@ -4,6 +4,7 @@
 @use './list-option-theme';
 @use '../mdc-helpers/mdc-helpers';
 @use '../../material/core/typography/typography';
+@use '../../material/core/typography/typography-utils';
 @use '../../material/core/theming/theming';
 
 
@@ -55,6 +56,14 @@
     @include mdc-list.without-ripple($query: mdc-helpers.$mat-typography-styles-query);
     @include list-option-theme.private-list-option-typography-styles();
   }
+
+  // According to the public spec this should be subtitle-1.
+  // However, body-1 and subtitle-1 are nearly identical in the public spec,
+  // and the Google-specific spec states that it should be body-1.
+  // For consistency, we use body-1 for both public and Google internal.
+  .mat-mdc-list-item .mdc-list-item__primary-text {
+    @include typography-utils.typography-level($config, body-1);
+  }
 }
 
 @mixin theme($theme-or-color-config) {