chore: Replace deprecated global functions with relevant equivalents.

PiperOrigin-RevId: 705488630

Author: material-web-copybara

packages/mdc-button/_button-shared-theme.scss

@@ -779,7 +779,7 @@ $disabled-container-color: rgba(
   );
 
   .mdc-button__focus-ring {
-    @if $offset-value != 0 and type-of($offset-value) == 'number' {
+    @if $offset-value != 0 and meta.type-of($offset-value) == 'number' {
       @include focus-ring.focus-ring-offset(
         $offset: $offset-value,
         $query: $query

packages/mdc-icon-button/_icon-button-theme.scss

@@ -422,7 +422,7 @@ $light-theme: (
     $offset
   );
 
-  @if type-of($offset-value) == 'number' {
+  @if meta.type-of($offset-value) == 'number' {
     .mdc-icon-button__focus-ring {
       @include focus-ring.focus-ring-offset(
         $offset: $offset-value,