fix: remove unused back url in the card url

Author: satnaing

src/pages/posts/[...page].astro

@@ -16,8 +16,6 @@ export const getStaticPaths = (async ({ paginate }) => {
 }) satisfies GetStaticPaths;
 
 const { page } = Astro.props;
-
-const backUrl = SITE.showBackButton ? `?from=${Astro.url.pathname}` : "/";
 ---
 
 <Layout title={`Posts | ${SITE.title}`}>
@@ -26,7 +24,7 @@ const backUrl = SITE.showBackButton ? `?from=${Astro.url.pathname}` : "/";
     <ul>
       {
         page.data.map(({ data, id }) => (
-          <Card href={`/posts/${id}${backUrl}`} frontmatter={data} />
+          <Card href={`/posts/${id}`} frontmatter={data} />
         ))
       }
     </ul>

src/pages/tags/[tag]/[...page].astro

@@ -29,8 +29,6 @@ export async function getStaticPaths({ paginate }: GetStaticPathsOptions) {
 const params = Astro.params;
 const { tag } = params;
 const { page, tagName } = Astro.props;
-
-const backUrl = SITE.showBackButton ? `?from=${Astro.url.pathname}` : "/";
 ---
 
 <Layout title={`Tag: ${tagName} | ${SITE.title}`}>
@@ -44,7 +42,7 @@ const backUrl = SITE.showBackButton ? `?from=${Astro.url.pathname}` : "/";
     <ul>
       {
         page.data.map(({ data, id }) => (
-          <Card href={`/posts/${id}${backUrl}`} frontmatter={data} />
+          <Card href={`/posts/${id}`} frontmatter={data} />
         ))
       }
     </ul>