[SDK] Fix: add gpt protocol to legacy tx chains (#6390)

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## PR-Codex overview
This PR focuses on adding support for the GPT Protocol to chains that only support legacy transactions.

### Detailed summary
- Updated the `.changeset/every-bees-exist.md` file to document the addition of the GPT Protocol.
- Added `1511670449` as the fee data for `GPT Mainnet` in the `packages/thirdweb/src/gas/fee-data.ts` file.

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.changeset/every-bees-exist.md

@@ -0,0 +1,5 @@
+---
+"thirdweb": patch
+---
+
+Adds GPT Protocol to chains that only support legacy transactions

packages/thirdweb/src/gas/fee-data.ts

@@ -42,6 +42,7 @@ const FORCE_GAS_PRICE_CHAIN_IDS = [
   994873017, // Lumia Mainnet
   19011, // Homeverse Mainnet
   40875, // Homeverse Testnet
+  1511670449, // GPT Mainnet
 ];
 
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