6. Fix any remaining CI issues

Author: mmalerba

src/material/_index.scss

@@ -70,7 +70,8 @@
 @forward './button-toggle/button-toggle-theme' as button-toggle-* show button-toggle-theme,
   button-toggle-color, button-toggle-typography;
 @forward './card/card-theme' as card-* show card-theme, card-color, card-typography;
-@forward './legacy-card/card-theme' as legacy-card-* show legacy-card-theme, legacy-card-color, legacy-card-typography;
+@forward './legacy-card/card-theme' as legacy-card-* show legacy-card-theme, legacy-card-color,
+  legacy-card-typography;
 @forward './checkbox/checkbox-theme' as checkbox-* show checkbox-theme, checkbox-color,
   checkbox-typography;
 @forward './chips/chips-theme' as chips-* show chips-theme, chips-color, chips-typography;

src/material/card/_card-theme.scss

@@ -56,7 +56,7 @@
 
 @mixin theme($theme-or-color-config) {
   $theme: theming.private-legacy-get-theme($theme-or-color-config);
-  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-card') {
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-card') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material/legacy-card/_card-theme.scss

@@ -54,7 +54,7 @@
 
 @mixin theme($theme-or-color-config) {
   $theme: theming.private-legacy-get-theme($theme-or-color-config);
-  @include theming.private-check-duplicate-theme-styles($theme, 'mat-card') {
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-legacy-card') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

tools/stylelint/theme-mixin-api.ts

@@ -215,6 +215,8 @@ function getComponentNameFromPath(filePath: string): string | null {
 
   if (filePath.includes('material-experimental') && filePath.includes('mdc-')) {
     prefix = 'mat-mdc-';
+  } else if (filePath.includes('material/legacy-')) {
+    prefix = 'mat-legacy-';
   } else if (filePath.includes('material')) {
     prefix = 'mat-';
   }