[SDK] Feature: Adds humanity testnet tx support (#5783)

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## PR-Codex overview
This PR focuses on adding support for the `Humanity Testnet` as a legacy transaction chain within the `thirdweb` package.

### Detailed summary
- Added `Humanity Testnet` with the value `1942999413` to the list of transaction chains in the `packages/thirdweb/src/gas/fee-data.ts` file.

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Author: gregfromstl

.changeset/tricky-pears-check.md

@@ -0,0 +1,5 @@
+---
+"thirdweb": patch
+---
+
+Adds Humanity Testnet as a legacy transaction chain

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

@@ -37,6 +37,7 @@ const FORCE_GAS_PRICE_CHAIN_IDS = [
   2016, // MainnetZ Mainnet
   9768, // MainnetZ Testnet
   2442, // Polygon zkEVM Cardona Testnet
+  1942999413, // Humanity Testnet
 ];
 
 /**