refactor: sync missed changes in g3 (angular#31363)

Author: andrewseguin

src/material/button/_icon-button-theme.scss

@@ -83,12 +83,10 @@
     );
     $calculated-size: map.get($size-map, $density-scale);
 
-    @include sass-utils.current-selector-or-root() {
-      @include token-utils.values(
-          m2-icon-button.get-density-tokens(
-              $theme, $exclude: (icon-button-state-layer-size))
-      );
-    }
+    @include token-utils.values(
+        m2-icon-button.get-density-tokens(
+            $theme, $exclude: (icon-button-state-layer-size))
+    );
 
     // Use `mat-mdc-button-base` to increase the specificity over the button's structural styles.
     .mat-mdc-icon-button.mat-mdc-button-base {

src/material/progress-bar/_progress-bar-theme.scss

@@ -15,15 +15,14 @@
 }
 
 @mixin color($theme, $color-variant: null) {
-  $tokens: m2-progress-bar.get-color-tokens($theme, primary);
   @if inspection.get-theme-version($theme) == 1 {
-    $tokens: map.get(m3-progress-bar.get-tokens($theme, $color-variant), color);
-  }
-
-  @include token-utils.values($tokens);
-
-  @if inspection.get-theme-version($theme) != 1 {
+    @include token-utils.values(
+        map.get(m3-progress-bar.get-tokens($theme, $color-variant), color));
+  } @else {
     .mat-mdc-progress-bar {
+      $tokens: m2-progress-bar.get-color-tokens($theme, primary);
+      @include token-utils.values($tokens);
+
       &.mat-accent {
         $tokens: m2-progress-bar.get-color-tokens($theme, secondary);
         @include token-utils.values($tokens);

src/material/slide-toggle/_slide-toggle-theme.scss

@@ -67,12 +67,20 @@
 /// Outputs typography theme styles for the mat-slide-toggle.
 /// @param {Map} $theme The theme to generate typography styles for.
 @mixin typography($theme) {
-  $tokens: m2-slide-toggle.get-typography-tokens($theme);
   @if inspection.get-theme-version($theme) == 1 {
-    $tokens: map.get(m3-slide-toggle.get-tokens($theme), typography);
-  }
+    @include token-utils.values(
+        map.get(m3-slide-toggle.get-tokens($theme), typography));
+  } @else {
+    @include sass-utils.current-selector-or-root() {
+      // TODO: See if this can be removed
+      @include token-utils.values(m2-slide-toggle.get-typography-tokens($theme));
 
-  @include token-utils.values($tokens);
+      .mat-mdc-slide-toggle {
+        @include token-utils.values(
+            m2-slide-toggle.get-typography-tokens($theme));
+      }
+    }
+  }
 }
 
 /// Outputs density theme styles for the mat-slide-toggle.