Shabana Mahmood's migrant crackdown is set to watered down again as almost 1,000 poured into Britain via small boats within 48 hours. Under the Home Secretary's proposals, the wait for migrants to obtain permanent residency would double from five to 10 years. Her plans would also see the wait for some lower-paid migrants to gain indefinite leave to remain (ILR) increased to 15 years. The announced crackdown sparked fury among Labour backbenchers…