Merge pull request #5604 from FlowFuse/add-h1-tag

Add accessible text to Device Agent page's image-only h1

Author: Yndira-E

src/platform/device-agent.njk

@@ -38,6 +38,7 @@ meta:
             <div class="md:flex items-center md:flex-row md:justify-between text-center md:text-left gap-8">
                 <div class="m-auto md:w-1/2 lg:w-5/12 max-w-md">
                     <h1 class="px-12 md:px-0 m-auto mb-6 max-md:flex max-md:flex-row max-md:justify-center md:ml-0 md:max-w-[250px]">
+                        <span class="sr-only">FlowFuse Device Agent</span>
                         {% image "./images/ff-logo-device-agent-light.svg", "FlowFuse Device Agent", [225] %}
                     </h1>
                     <p class="mb-6">