feat: Enable PathDB config (#1244)

Author: alarso16

plugin/evm/config/config.md

@@ -251,7 +251,7 @@ Failing to set these options will result in errors on VM initialization. Additio
 | `database-config-file` | string | Path to database configuration file | - |
 | `use-standalone-database` | bool | Use standalone database instead of shared one | - |
 | `inspect-database` | bool | Inspect database on startup | `false` |
-| `state-scheme` | string |  EXPERIMENTAL: specifies the database scheme to store state data; can be one of `hash` or `firewood` | `hash` | 
+| `state-scheme` | string |  EXPERIMENTAL: specifies the database scheme to store state data; can be one of `hash`, `firewood`, or `path` | `hash` | 
 
 ## Transaction Indexing
 

plugin/evm/vm.go

@@ -409,8 +409,7 @@ func (vm *VM) Initialize(
 		}
 	}
 	if vm.ethConfig.StateScheme == rawdb.PathScheme {
-		log.Error("Path state scheme is not supported. Please use HashDB or Firewood state schemes instead")
-		return errors.New("Path state scheme is not supported")
+		log.Warn("Path state scheme is not supported. Please use HashDB or Firewood state schemes instead")
 	}
 
 	// Create directory for offline pruning

plugin/evm/vm_test.go

@@ -367,7 +367,8 @@ func issueAndAccept(t *testing.T, vm *VM) snowman.Block {
 }
 
 func TestBuildEthTxBlock(t *testing.T) {
-	for _, scheme := range schemes {
+	// This test is done for all schemes to ensure the VM can be started with any scheme.
+	for _, scheme := range []string{rawdb.HashScheme, rawdb.PathScheme, customrawdb.FirewoodScheme} {
 		t.Run(scheme, func(t *testing.T) {
 			testBuildEthTxBlock(t, scheme)
 		})