chore: revert the check to allow arbitrary calldata length use cases (#57)

## Summary
The calling contract should be responsible for checking the calldata
length when they call `executeFromPluginToExternal`.

## Detail
### Changeset
* reverted the change and added a new test.

### Checklist
- [x] Did you add new tests and confirm all tests pass? (`yarn test`)
- [ ] Did you update relevant docs? (docs are found in the `docs`
folder)
- [x] Do your commits follow the [Conventional
Commits](https://www.conventionalcommits.org/en/v1.0.0/) standard?
- [x] Does your PR title also follow the [Conventional
Commits](https://www.conventionalcommits.org/en/v1.0.0/) standard?
- [ ] If you have a breaking change, is it [correctly reflected in your
commit
message](https://www.conventionalcommits.org/en/v1.0.0/#examples)? (e.g.
`feat!: breaking change`)
- [x] Did you run lint (`yarn lint`) and fix any issues?
- [x] Did you run formatter (`yarn format:check`) and fix any issues
(`yarn format:write`)?

## Testing
* added a test case to verify native token transfer is allowed

## Documentation
n/a

Author: huaweigu

src/msca/6900/v0.7/managers/PluginExecutor.sol

@@ -77,9 +77,6 @@ library PluginExecutor {
         internal
         returns (bytes memory)
     {
-        if (data.length < 4) {
-            revert NotFoundSelector();
-        }
         if (target == address(this) || ERC165Checker.supportsInterface(target, type(IPlugin).interfaceId)) {
             revert ExecuteFromPluginToExternalNotPermitted();
         }

test/msca/6900/v0.7/PluginExecutor.t.sol

@@ -1186,6 +1186,8 @@ contract PluginExecutorTest is TestUtils {
     function testShortCalldataIntoExecuteFromPluginToExternal() public {
         // deployment was done in setUp
         assertTrue(address(msca).code.length != 0);
+        // start with balance
+        vm.deal(address(msca), 10 ether);
         bytes32 manifestHash = keccak256(abi.encode(testTokenPlugin.pluginManifest()));
         // airdrop 1000 tokens
         bytes memory pluginInstallData = abi.encode(1000);
@@ -1195,11 +1197,11 @@ contract PluginExecutorTest is TestUtils {
         dependencies[0] =
             FunctionReference(address(singleOwnerPlugin), uint8(ISingleOwnerPlugin.FunctionId.USER_OP_VALIDATION_OWNER));
         msca.installPlugin(address(testTokenPlugin), manifestHash, pluginInstallData, dependencies);
-
-        // fail early even before InvalidValidationFunctionId is reverted
-        vm.expectRevert(NotFoundSelector.selector);
-        bytes memory data = abi.encodeCall(testTokenPlugin.callExecuteFromPluginExternal, (bytes("aaa")));
+        address externalTarget = testTokenPlugin.LONG_LIQUIDITY_POOL_ADDR();
+        uint256 initialBal = externalTarget.balance;
+        bytes memory data = abi.encodeCall(testTokenPlugin.callExecuteFromPluginExternal, (1, bytes("")));
         address(msca).callWithReturnDataOrRevert(0, data);
+        assertEq(externalTarget.balance, initialBal + 1);
         vm.stopPrank();
     }
 }

test/msca/6900/v0.7/TestTokenPlugin.sol

@@ -115,8 +115,8 @@ contract TestTokenPlugin is BasePlugin {
         return true;
     }
 
-    function callExecuteFromPluginExternal(bytes calldata data) external returns (bool) {
-        IPluginExecutor(msg.sender).executeFromPluginExternal(LONG_LIQUIDITY_POOL_ADDR, 0, data);
+    function callExecuteFromPluginExternal(uint256 value, bytes calldata data) external returns (bool) {
+        IPluginExecutor(msg.sender).executeFromPluginExternal(LONG_LIQUIDITY_POOL_ADDR, value, data);
         return true;
     }
 
@@ -517,6 +517,7 @@ contract TestTokenPlugin is BasePlugin {
             })
         });
 
+        manifest.canSpendNativeToken = true;
         manifest.dependencyInterfaceIds = new bytes4[](1);
         manifest.dependencyInterfaceIds[0] = type(ISingleOwnerPlugin).interfaceId;
         return manifest;