Revert changes to src/components/theme-toggle.tsx. Fixes #2060

Author: philipp-spiess

src/docs/dark-mode.mdx

@@ -174,15 +174,15 @@ Here's a simple example of how you can support light mode, dark mode, as well as
 // On page load or when changing themes, best to add inline in `head` to avoid FOUC
 document.documentElement.classList.toggle(
   "dark",
-  localStorage.currentTheme === "dark" ||
+  localStorage.theme === "dark" ||
     (!("theme" in localStorage) && window.matchMedia("(prefers-color-scheme: dark)").matches),
 );
 
 // Whenever the user explicitly chooses light mode
-localStorage.currentTheme = "light";
+localStorage.theme = "light";
 
 // Whenever the user explicitly chooses dark mode
-localStorage.currentTheme = "dark";
+localStorage.theme = "dark";
 
 // Whenever the user explicitly chooses to respect the OS preference
 localStorage.removeItem("theme");