manager: Allow to use other su to install

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

@@ -50,10 +50,19 @@ fun createRootShell(globalMnt: Boolean = false): Shell {
         } else {
             builder.build(getKsuDaemonPath(), "debug", "su")
         }
+    } catch (e: Throwable) {
+        Log.w(TAG, "ksu failed: ", e)
+        try {
+            if (globalMnt) {
+                builder.build("su")
+            } else {
+                builder.build("su", "-mm")
+            }
         } catch (e: Throwable) {
             Log.e(TAG, "su failed: ", e)
             builder.build("sh")
         }
+    }
 }
 
 fun execKsud(args: String, newShell: Boolean = false): Boolean {