May 28 (Reuters) - Global investors are gaming out how a tentative deal to raise the United States debt ceiling could ripple through markets, as lawmakers strive to pass the agreement through Congress before a June 5 deadline.A deal to lift the $31.4 trillion debt limit announced by the White House and House Republicans late Saturday would avert a catastrophic U.S. default and boost overall appetite for risk, while also buoying some of the sectors that have been left behind in this year’s tech-led rally, such as cyclical stocks and...