Chronos: try ipex1.11 to decide if we need to enable it by default

[TheaperDeng]

ipex 1.9 does not bring any optimization to chronos's models but it does not mean 1.11(after a large rafactor) it can't benefit chronos models. We need to

• [ ] first check if the ipex option forecaster.use_ipex is valide
• [ ] check if 1.11 brings speed-up
• [ ] change the default setting (if effective)