Optimize the fixed menu to allow configurable width#129

HuaFangYun wants to merge 6 commits intoant-design-blazor:masterant-design-blazor/blazor-pro-components:masterfrom

HuaFangYun:Optimize-the-fixed-menu-to-allow-configurable-widthHuaFangYun/blazor-pro-components:Optimize-the-fixed-menu-to-allow-configurable-widthCopy head branch name to clipboard