[Bug]: generatePath don't distinguish between absolute '/*' and relative '*'

[SentretC]

What version of React Router are you using?

6.3.0

Steps to Reproduce

// Both produce '/index'
generatePath('*', {'*': 'index'})
generatePath('/*', {'*': 'index'})

while the other kind of placeholder

// Produces 'index'
generatePath(':param', {param: 'index'})
// Produces '/index'
generatePath('/:param', {param: 'index'})

also

// Both produce ''
generatePath('*')
generatePath('/*')

Expected Behavior

// Produces 'index'
generatePath('*', {'*': 'index'})
// Produces '/index'
generatePath('/*', {'*': 'index'})
// Produces ''
generatePath('*')
// Produces '/'
generatePath('/*')

Actual Behavior

(See the 'Steps to Reproduce' part)

[brophdawg11]

Fixed in #9174 - will be released with 6.4.0 👍