chore(tests): migrate tests from pyth.js to PythGovernance.t.sol, excluding Wormhole-specific tests

Author: cctdaniel

target_chains/ethereum/contracts/forge-test/PythGovernance.t.sol

@@ -1,5 +1,8 @@
 // SPDX-License-Identifier: Apache 2
 
+// NOTE: These tests were migrated from target_chains/ethereum/contracts/test/pyth.js but exclude the Wormhole-specific tests,
+// which remain in the original JavaScript test file.
+
 pragma solidity ^0.8.0;
 
 import "@openzeppelin/contracts/proxy/ERC1967/ERC1967Proxy.sol";