fix(web): fix search 400 error when only entering m: (#2261)

Co-authored-by: faupau03 <paul.paffe@gmx.net>

web/src/lib/components/shared-components/search-bar/search-bar.svelte

@@ -71,6 +71,7 @@
 				: 'rounded-3xl bg-gray-200 border border-transparent'}"
 			placeholder="Search your photos"
 			required
+			pattern="^(?!m:$).*$"
 			bind:value
 		/>
 	</label>