fix: technical debts left by the Sites, Authors and SEO slices, plus backend support for the new Sites and Authors pagination

web/src/views/__tests__/seoTestKit.ts

@@ -112,6 +112,9 @@ export function seoBackend(
 		size: 100,
 		counts: { all: 2, unused: 0, duplicates: 0 },
 	})
+	for (const item of [NORTH_WALL, KITCHEN_AFTER]) {
+		backend.responders[`GET /v1/media/${item.id}`] = () => item
+	}
 	return backend
 }
 
@@ -196,12 +199,6 @@ export async function openDisclosure(title: string) {
 	await flushPromises()
 }
 
-export function inputByPlaceholder(root: ParentNode, placeholder: string) {
-	return root.querySelector<HTMLInputElement | HTMLTextAreaElement>(
-		`[placeholder="${placeholder}"]`,
-	)!
-}
-
 export function fieldByLabel(root: ParentNode, label: string) {
 	const element = Array.from(root.querySelectorAll('label')).find((candidate) =>
 		textOf(candidate).startsWith(label),