[TypeDeclaration] Skip multi sprintf possibly falsy on AddParamStringTypeFromSprintfUseRector

[samsonasik]

@TomasVotruba when there are multi sprintf, and loop already return true early on VariableInSprintfMaskMatcher, this early mark as string, which should not, it should verify when there is sprintf with false mark in the loop.

[samsonasik]

Fixed with count() check insted, only verify if there is single sprintf(), multi sprintf may cause need of collection of validations, which can be truthy early, then false later /cc @TomasVotruba

[samsonasik]

/cc @staabm

[samsonasik]

All checks have passed 🎉 @TomasVotruba I am merging it to have faster feedback to test ;)