executor: linux: bump fs.mount-max to 100000

Android sets fs.mount-max to 100, making it impossible to create new chroots.
Relax the limit, setting it to a value used on desktops.

Tracking bug: google#4972

executor/common_linux.h

@@ -4164,7 +4164,10 @@ static int do_sandbox_none(void)
 #if SYZ_EXECUTOR || SYZ_WIFI
 	initialize_wifi_devices();
 #endif
+#ifndef __ANDROID__
+	// TODO(glider): temporarily disable tmpfs mounting on Android.
 	sandbox_common_mount_tmpfs();
+#endif
 	setup_binderfs();
 	loop();
 	doexit(1);