[UI] Show staking disabled is still within the allowList timewindow

[jrwbabylonlab]

This shall be determined by the response from backend API network-status endpoint

Use the

"staking_status": {
            "is_staking_open": true
        },

value to determine whether the form shall be disabled and above should be shown.

NOTE: Due to bandwidth concern, adding the timestamp here will be quite complex(time consuming), i would leave it as "Staking is not enabled at this time. Please check back later". But of course, something we will continue look into after testnet as improvement

[jrwbabylonlab]

@supertong https://www.figma.com/design/05UW9XBXoFWcKEEIB1ZetV/Design-File?node-id=1177-366119&t=kfEmnhGWxFig0OXz-0

[supertong]

#542