INDRAPRASTHA GAS Q2 FY27 CONCALL: TARGETS DOUBLE-DIGIT ANNUAL VOLUME GROWTH, GUIDES FY28 EBITDA MARGIN OF ₹6–7/SCM SUBJECT TO LNG SUPPLY NORMALIZATION; PLANS ₹1,700–1,800 CR FY27 CAPEX & EXPECTS SPOT LNG SHARE TO FALL TO 11–12% IN Q3 FY27