Updated Postgres Spec for where to find engine version, removed calling calling -ev in edit commands (#14735)

* Added spec.engine.version, took out calling engine version with edit calls

* Added text wrong place

* missed updates

* PR fix

extensions/arc/src/models/postgresModel.ts

@@ -53,10 +53,7 @@ export class PostgresModel extends ResourceModel {
 
 	/** Returns the major version of Postgres */
 	public get engineVersion(): string | undefined {
-		const kind = this._config?.kind;
-		return kind
-			? kind.substring(kind.lastIndexOf('-') + 1)
-			: undefined;
+		return this._config?.spec.engine.version;
 	}
 
 	/** Returns the IP address and port of Postgres */