fix tsserver picking hidden files created by emacs
fix tsserver picking hidden files created by emacs

Saw this good for first timers. I followed what @sheetalkamat suggested. 
#31916
RyanCavanaugh/TypeScript,nojvek/TypeScript,nojvek/TypeScript,kpreisser/TypeScript,weswigham/TypeScript,kpreisser/TypeScript,Microsoft/TypeScript,SaschaNaz/TypeScript,microsoft/TypeScript,nojvek/TypeScript,microsoft/TypeScript,RyanCavanaugh/TypeScript,SaschaNaz/TypeScript,nojvek/TypeScript,weswigham/TypeScript,weswigham/TypeScript,kpreisser/TypeScript,Microsoft/TypeScript,alexeagle/TypeScript,Microsoft/TypeScript,RyanCavanaugh/TypeScript,minestarks/TypeScript,kitsonk/TypeScript,alexeagle/TypeScript,microsoft/TypeScript,minestarks/TypeScript,SaschaNaz/TypeScript,SaschaNaz/TypeScript,kitsonk/TypeScript,kitsonk/TypeScript,minestarks/TypeScript,alexeagle/TypeScript