Fix TS errors and weird instances of undefined error due to prisma upgrade and turbo cache (#3475)

* Fix TS errors

* Always reexecute prisma postinstall as prisma version might change after yarn

packages/lib/errors.ts

@@ -23,7 +23,7 @@ export function handleErrorsJson(response: Response) {
 
 export function handleErrorsRaw(response: Response) {
   if (response.status === 204) {
-    return {};
+    return "{}";
   }
   if (!response.ok && response.status < 200 && response.status >= 300) {
     response.text().then(console.log);

turbo.json

@@ -113,6 +113,9 @@
       "outputs": ["../../node_modules/@prisma/client/**", "../../node_modules/@prisma/admin-client/**"],
       "inputs": ["./schema.prisma", "./prisma/schema.prisma"]
     },
+    "@calcom/prisma#post-install": {
+      "cache": false
+    },
     "start": {},
     "embed-tests": {
       "cache": false