revert: 表格筛选回退默认 Dropdown 布局（与搜索同区、紧凑）

Above 布局与工具栏搜索分成两个区域且占空间；回退 Filament 标准做法：筛选按钮在工具栏、与搜索框同一行，激活时带数量徽章。保留表格行紧凑 CSS

app/Filament/Resources/Comments/Tables/CommentsTable.php

@@ -65,7 +65,7 @@ class CommentsTable
                         'spam' => '垃圾',
                         'rejected' => '已拒绝',
                     ]),
-            ], \Filament\Tables\Enums\FiltersLayout::AboveContent)
+            ])
             ->recordActions([
                 Action::make('approve')
                     ->label('通过')

app/Filament/Resources/Media/Tables/MediaTable.php

@@ -56,7 +56,7 @@ class MediaTable
                         'attachments' => '附件',
                         'cover' => '封面',
                     ]),
-            ], \Filament\Tables\Enums\FiltersLayout::AboveContent)
+            ])
             ->recordActions([
                 \Filament\Actions\EditAction::make(),
             ])

app/Filament/Resources/Posts/Tables/PostsTable.php

@@ -78,8 +78,7 @@ class PostsTable
                     ]),
                 TernaryFilter::make('is_sticky')
                     ->label('置顶'),
-            ], \Filament\Tables\Enums\FiltersLayout::AboveContent)
-            ->filtersFormColumns(3)
+            ])
             ->recordActions([
                 ViewAction::make(),
                 EditAction::make(),

app/Filament/Resources/Users/Tables/UsersTable.php

@@ -51,7 +51,7 @@ class UsersTable
                 \Filament\Tables\Filters\SelectFilter::make('roles')
                     ->label('角色')
                     ->relationship('roles', 'name'),
-            ], \Filament\Tables\Enums\FiltersLayout::AboveContent)
+            ])
             ->recordActions([
                 EditAction::make(),
             ])