fix(ui): сбрасывать снимок при изменении параметров speed-пробы

tests/e2e/uptime-links.spec.ts

@@ -861,3 +861,45 @@ test("Speed snapshot: смена пары сбрасывает снимок по
   await expect(history).toContainText("80")
   expect(writes).toBe(3)
 })
+
+test("Speed snapshot: смена длительности сбрасывает снимок, прежняя история не накладывается", async ({ page }) => {
+  await setup(page, "/uptime?probe=p1", 0, false, "mm:uptime:write", false, true)
+  await page.getByRole("button", { name: "Пауза", exact: true }).click()
+  await page.getByRole("button", { name: /Скорость/ }).click()
+  await page.route("**/api/uptime/speed-test", route => route.fulfill({ json: { ok: true, result: { runId: route.request().postDataJSON().runId, txAvgMbps: 30, rxAvgMbps: 80 } } }))
+  let fail = true, writes = 0
+  await page.route("**/api/uptime/speed-probes", route => {
+    if (route.request().method() !== "PUT") return route.fallback()
+    writes++
+    return route.fulfill(fail ? { status: 500, json: { error: "Пара не сохранена" } } : { json: { ok: true } })
+  })
+  const run = page.getByRole("button", { name: "Запустить", exact: true })
+  const row = () => page.getByRole("button", { name: "Запустить", exact: true, includeHidden: true }).locator("xpath=../../..")
+  await run.click()
+  await expect(row().getByText("80 Мбит/с", { exact: true })).toBeVisible()
+  const history = page.getByRole("table")
+  await expect(history).toContainText("80")
+  const summary = page.locator('[aria-label="Сводка speed-проб"]')
+  await expect(summary).toContainText("1 run")
+  await page.getByRole("button", { name: "Редактировать speed-пробу", exact: true }).click()
+  const dialog = page.getByRole("dialog")
+  const duration = () => dialog.locator('[data-slot="field"]').filter({ has: page.locator('[data-slot="field-label"]').filter({ hasText: /^Сек$/ }) }).getByRole("textbox")
+  await duration().fill("20")
+  await dialog.getByRole("button", { name: "Сохранить", exact: true }).click()
+  await expect(dialog.getByRole("alert")).toContainText("Пара не сохранена")
+  await expect(row()).toContainText("80 Мбит/с")
+  fail = false
+  await dialog.getByRole("button", { name: "Сохранить", exact: true }).click()
+  await expect(dialog).toBeHidden()
+  await expect(row()).toContainText("20")
+  await expect(row()).not.toContainText("80 Мбит/с")
+  await expect(summary).toContainText("1 run")
+  await expect(history).toContainText("80")
+  await page.getByRole("button", { name: "Редактировать speed-пробу", exact: true }).click()
+  await duration().fill("10")
+  await dialog.getByRole("button", { name: "Сохранить", exact: true }).click()
+  await expect(dialog).toBeHidden()
+  await expect(row()).not.toContainText("80 Мбит/с")
+  await expect(history).toContainText("80")
+  expect(writes).toBe(3)
+})