manager: Create a new root shell for action.sh to avoid blocking the global root shell.

manager/app/src/main/java/me/weishu/kernelsu/ui/util/KsuCli.kt

@@ -191,7 +191,7 @@ fun flashModule(
 fun runModuleAction(
     moduleId: String, onStdout: (String) -> Unit, onStderr: (String) -> Unit
 ): Boolean {
-    val shell = getRootShell()
+    val shell = createRootShell(true)
 
     val stdoutCallback: CallbackList<String?> = object : CallbackList<String?>() {
         override fun onAddElement(s: String?) {