Lea Michele’s son “cried hysterically” when he heard her sing. The 36-year-old actress – who has two-year-old son Ever Leo with husband Zandy Reich – is best known for her role as singing diva Rachel Berry on hit series ‘Glee’ but now stars as comedienne Fanny Brice in Broadway musical ‘Funny Girl’ and was advised to “incorporate” the little one into her work more as she returned to the stage. Speaking on ‘The Tonight Show with Jimmy Fallon’, she said: “[Starting ‘Funny Girl’ was] the first time I’ve gone back to work [since he was born]. I’ve been home with him for the past two years, 100 per…