fix(campaigns): drop dead force param from activateCampaign API client

The backend endpoint no longer accepts a force query param (a draft
campaign can never have a future start_date to force past). No frontend
code currently calls this function, but keep it matching the real
backend contract in case a future admin UI wires it up.

frontend/src/api/campaigns.ts

@@ -166,13 +166,9 @@ export async function removeTestFromCampaign(
   await client.delete(`/campaigns/${campaignId}/tests/${campaignTestId}`);
 }
 
-/** Activate a campaign. */
-export async function activateCampaign(
-  campaignId: string,
-  options?: { force?: boolean },
-): Promise<Campaign> {
-  const params = options?.force ? "?force=true" : "";
-  const { data } = await client.post<Campaign>(`/campaigns/${campaignId}/activate${params}`);
+/** Admin-only emergency override: activate a draft campaign directly, bypassing the approval queue. */
+export async function activateCampaign(campaignId: string): Promise<Campaign> {
+  const { data } = await client.post<Campaign>(`/campaigns/${campaignId}/activate`);
   return data;
 }