KEYSTONE REALTORS (RUSTOMJEE) Q2 FY27 CONCALL: REITERATES ₹5,000 CR FY27 PRE-SALES & ₹8,000 CR LAUNCH GDV TARGET; CUTS OPERATING CASH FLOW GUIDANCE TO ₹700–800 CR, AIMS FOR ₹10,000 CR ANNUAL PRE-SALES BY 2030