HasPrefix uses wrong parameter order

[mettke]

According to the Go Documentation the HasPrefix Function has its parameters swapped. This is how it is:

func isValidBranchID(s string) bool {
    return strings.HasPrefix("br-", s)
}

And this is how it should be:

func isValidBranchID(s string) bool {
    return strings.HasPrefix(s, "br-")
}

• https://pkg.go.dev/strings#HasPrefix
• https://github.com/kislerdm/terraform-provider-neon/blob/1da75472554e8119a6139f8bca7b5b5b4a4c9b88/internal/provider/resource_branch.go#L224C1-L226C2