feat: allowedToCreateChains in TeamResponse (#6172)

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## PR-Codex overview
This PR focuses on adding the `canCreatePublicChains` property to the `mocks.ts` and modifying its type in `api.ts` to enhance the API's capabilities regarding public chain creation.

### Detailed summary
- Added `canCreatePublicChains: false` to the object in `mocks.ts`.
- Updated the type of `canCreatePublicChains` in `api.ts` to `boolean | null`.

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Author: catalyst17

packages/service-utils/src/core/api.ts

@@ -51,6 +51,7 @@ export type TeamResponse = {
   billingEmail: string | null;
   billingStatus: "noPayment" | "validPayment" | "invalidPayment" | null;
   growthTrialEligible: false;
+  canCreatePublicChains: boolean | null;
   enabledScopes: ServiceName[];
 };
 

packages/service-utils/src/mocks.ts

@@ -46,6 +46,7 @@ export const validTeamResponse: TeamResponse = {
   billingEmail: "[email protected]",
   billingStatus: "noPayment",
   growthTrialEligible: false,
+  canCreatePublicChains: false,
   enabledScopes: ["storage", "rpc", "bundler"],
 };