If Lexington survived the Coral Sea

If Lexington's fuel explosion were controlled, would Yorktown still be patched up for Midway?

Probably yes if Yorktown remained the quickest carrier to make combat-ready; Lexington's survival would add options rather than remove the need.

American planners would compare which carrier could return to combat fastest rather than automatically choosing Lexington. Yorktown's rapid repair could still proceed if she remained the more immediately usable ship for Midway. Lexington would likely receive temporary work at Pearl Harbor before sailing to a mainland yard for the deeper repairs needed after Coral Sea damage. The premise also requires preventing the confined fuel-vapor explosion rather than trying to control it after ignition, chiefly by venting leaked fuel away from an enclosed space.