site: remove unused bottom from sticky layout (ant-design#56215)

Author: linyana

components/layout/__tests__/__snapshots__/demo-extend.test.ts.snap

@@ -1401,7 +1401,7 @@ exports[`renders components/layout/demo/fixed-sider.tsx extend context correctly
 >
   <aside
     class="ant-layout-sider ant-layout-sider-dark css-var-test-id"
-    style="overflow: auto; height: 100vh; position: sticky; inset-inline-start: 0; top: 0px; bottom: 0px; scrollbar-width: thin; scrollbar-gutter: stable; flex: 0 0 200px; max-width: 200px; min-width: 200px; width: 200px;"
+    style="overflow: auto; height: 100vh; position: sticky; inset-inline-start: 0; top: 0px; scrollbar-width: thin; scrollbar-gutter: stable; flex: 0 0 200px; max-width: 200px; min-width: 200px; width: 200px;"
   >
     <div
       class="ant-layout-sider-children"

components/layout/__tests__/__snapshots__/demo.test.ts.snap

@@ -772,7 +772,7 @@ exports[`renders components/layout/demo/fixed-sider.tsx correctly 1`] = `
 >
   <aside
     class="ant-layout-sider ant-layout-sider-dark css-var-test-id"
-    style="overflow:auto;height:100vh;position:sticky;inset-inline-start:0;top:0;bottom:0;scrollbar-width:thin;scrollbar-gutter:stable;flex:0 0 200px;max-width:200px;min-width:200px;width:200px"
+    style="overflow:auto;height:100vh;position:sticky;inset-inline-start:0;top:0;scrollbar-width:thin;scrollbar-gutter:stable;flex:0 0 200px;max-width:200px;min-width:200px;width:200px"
   >
     <div
       class="ant-layout-sider-children"

components/layout/demo/fixed-sider.tsx

@@ -20,7 +20,6 @@ const siderStyle: React.CSSProperties = {
   position: 'sticky',
   insetInlineStart: 0,
   top: 0,
-  bottom: 0,
   scrollbarWidth: 'thin',
   scrollbarGutter: 'stable',
 };