A hateful “art’’ installation featuring a mock street sign reading, “F–k Israel Ln” and a “Hamas Lover” poster was exhibited on taxpayer-funded Governors Island during a weekend family Halloween event. The crude “unauthorized” display excoriated the Jewish state, including with another poster that read that it’s “beyond the pale” for Israel to exist and which lauded US-designated terror groups, according to images obtained by The Post. The outside of the small cabin housing the installation