quickAlgo-Blockly: Fix issues with runner and checkEndEveryTurn
quickAlgo-Blockly: Fix issues with runner and checkEndEveryTurn

Execution was continuing even after checkEndCondition threw an end of
execution, leading to weird results.

be-oi/beoi-contest-modules,France-ioi/bebras-modules,be-oi/beoi-contest-modules,France-ioi/bebras-modules