Do not move assignment value on new line if `variable_statement_prefer_single_line` is `true`

[MrFoxPro]

Before

let str = 
	"relative m-t-auto mb8 h12 wfull font-bold c-white rounded-43px border-style-none bg-blue-450 shrink-0 dark:disabled:(bg-blue-900! c-blue-700) light:disabled:(bg-blue-100! c-blue-000) active:bg-blue-450/80 cursor-pointer"

After

let str = "relative m-t-auto mb8 h12 wfull font-bold c-white rounded-43px border-style-none bg-blue-450 shrink-0 dark:disabled:(bg-blue-900! c-blue-700) light:disabled:(bg-blue-100! c-blue-000) active:bg-blue-450/80 cursor-pointer"

[CLAassistant]

All committers have signed the CLA.

[xseman]

Can this be merged, or is something blocking it?

[MrFoxPro]

@dsherret