[Dashoard] Remove modular contracts beta tags (#5314)

## Problem solved

Short description of the bug fixed or feature added

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## PR-Codex overview
This PR focuses on updating the `displayName` and removing the `isBeta` flag for the `modular-contracts` entry in the `explore.ts` file, indicating a shift from a beta status to a more stable release.

### Detailed summary
- Changed `displayName` from "Modular Contracts (Beta)" to "Modular Contracts".
- Removed the `isBeta` property set to `true`.

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Author: kien-ngo

apps/dashboard/src/data/explore.ts

@@ -94,10 +94,9 @@ const MARKETS = {
 const MODULAR_CONTRACTS = {
   id: "modular-contracts",
   name: "modular",
-  displayName: "Modular Contracts (Beta)",
+  displayName: "Modular Contracts",
   description:
     "Collection of highly customizable and upgradeable smart contracts built with the modular contracts framework.",
-  isBeta: true,
   contracts: [
     // erc721 drop
     [