[yandex-maps] fix nullable types
[yandex-maps] fix nullable types

georgemarshall/DefinitelyTyped,AgentME/DefinitelyTyped,aciccarello/DefinitelyTyped,chrootsu/DefinitelyTyped,zuzusik/DefinitelyTyped,one-pieces/DefinitelyTyped,nycdotnet/DefinitelyTyped,magny/DefinitelyTyped,jimthedev/DefinitelyTyped,laurentiustamate94/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,AgentME/DefinitelyTyped,dsebastien/DefinitelyTyped,jimthedev/DefinitelyTyped,AgentME/DefinitelyTyped,benishouga/DefinitelyTyped,borisyankov/DefinitelyTyped,georgemarshall/DefinitelyTyped,benishouga/DefinitelyTyped,magny/DefinitelyTyped,benishouga/DefinitelyTyped,rolandzwaga/DefinitelyTyped,georgemarshall/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,nycdotnet/DefinitelyTyped,chrootsu/DefinitelyTyped,borisyankov/DefinitelyTyped,abbasmhd/DefinitelyTyped,alexdresko/DefinitelyTyped,abbasmhd/DefinitelyTyped,arusakov/DefinitelyTyped,alexdresko/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,arusakov/DefinitelyTyped,georgemarshall/DefinitelyTyped,zuzusik/DefinitelyTyped,jimthedev/DefinitelyTyped,benliddicott/DefinitelyTyped,AgentME/DefinitelyTyped,rolandzwaga/DefinitelyTyped,arusakov/DefinitelyTyped,mcliment/DefinitelyTyped,markogresak/DefinitelyTyped,zuzusik/DefinitelyTyped,aciccarello/DefinitelyTyped,dsebastien/DefinitelyTyped,aciccarello/DefinitelyTyped