fix(packages/@mantine/core): revert generated style changes

Author: brookton

packages/@mantine/core/src/core/MantineProvider/default-css-variables.css

@@ -1,9 +1,14 @@
 /* stylelint-disable */
 /* This file is automatically generated, do not modify it directly. */
 :root {
+  --mantine-z-index-app: 100;
+  --mantine-z-index-modal: 200;
+  --mantine-z-index-popover: 300;
+  --mantine-z-index-overlay: 400;
+  --mantine-z-index-max: 9999;
+
   --mantine-scale: 1;
   --mantine-cursor-type: default;
-  --mantine-color-scheme: light dark;
   --mantine-webkit-font-smoothing: antialiased;
   --mantine-moz-font-smoothing: grayscale;
   --mantine-color-white: #fff;
@@ -246,6 +251,7 @@
   --mantine-h6-font-weight: 700;
 }
 :root[data-mantine-color-scheme='dark'] {
+  --mantine-color-scheme: dark;
   --mantine-primary-color-contrast: var(--mantine-color-white);
   --mantine-color-bright: var(--mantine-color-white);
   --mantine-color-text: var(--mantine-color-dark-0);
@@ -374,7 +380,9 @@
   --mantine-color-orange-outline: var(--mantine-color-orange-4);
   --mantine-color-orange-outline-hover: rgba(255, 169, 77, 0.05);
 }
+
 :root[data-mantine-color-scheme='light'] {
+  --mantine-color-scheme: light;
   --mantine-primary-color-contrast: var(--mantine-color-white);
   --mantine-color-bright: var(--mantine-color-black);
   --mantine-color-text: #000;