fix: don't try to display brand logo in folded sidebar, if there is is no image

https://web.tracklify.com/project/2b7ZVgE5/AdminForth/1303/IvoLO3Sx/image

Author: yaroslav8765

adminforth/spa/src/components/Sidebar.vue

@@ -28,7 +28,7 @@
           :class="{ 
             'hidden': !(coreStore.config?.showBrandLogoInSidebar !== false && (!iconOnlySidebarEnabled || !isSidebarIconOnly || (isSidebarIconOnly && isSidebarHovering)))          }"
         />
-        <img :src="loadFile(coreStore.config?.iconOnlySidebar?.logo || '')" :alt="`${ coreStore.config?.brandName } Logo`" class="af-sidebar-icon-only-logo h-8" :class="{ 'hidden': !(coreStore.config?.showBrandLogoInSidebar !== false && coreStore.config?.iconOnlySidebar?.logo && iconOnlySidebarEnabled && isSidebarIconOnly && !isSidebarHovering) }" />
+        <img v-if="coreStore.config?.iconOnlySidebar?.logo" :src="loadFile(coreStore.config?.iconOnlySidebar?.logo || '')" :alt="`${ coreStore.config?.brandName } Logo`" class="af-sidebar-icon-only-logo h-8" :class="{ 'hidden': !(coreStore.config?.showBrandLogoInSidebar !== false && coreStore.config?.iconOnlySidebar?.logo && iconOnlySidebarEnabled && isSidebarIconOnly && !isSidebarHovering) }" />
         <span 
           v-if="coreStore.config?.showBrandNameInSidebar && (!iconOnlySidebarEnabled || !isSidebarIconOnly || (isSidebarIconOnly && isSidebarHovering))"
           class="af-title self-center text-lightNavbarText-size font-semibold sm:text-lightNavbarText-size whitespace-nowrap dark:text-darkSidebarText text-lightSidebarText"