fix: temperature should convert to float

[wangerzi]

When init ChatOpenAI, temperature attribution should be float, otherwise we will always set temperature = 0

Before:

After fix:

[HenryHengZJ]

ohhhhh wait whattttttttt all these time i didnt notice that!! would you be able to update all the nodes that have the temperature settings?

Thank you so much!! @wangerzi

[wangerzi]

@HenryHengZJ I updated all the code by search temperature variable 😄

[HenryHengZJ]

thank you!!