fix: file_open didn't set lexer for file if file loads to empty tab with some lexer
fix: file_open didn't set lexer for file if file loads to empty tab with some lexer

vhanla/CudaText,vhanla/CudaText,vhanla/CudaText,Alexey-T/CudaText,Alexey-T/CudaText,vhanla/CudaText,Alexey-T/CudaText,Alexey-T/CudaText,vhanla/CudaText,vhanla/CudaText,Alexey-T/CudaText,vhanla/CudaText,vhanla/CudaText,Alexey-T/CudaText,vhanla/CudaText,vhanla/CudaText,Alexey-T/CudaText,Alexey-T/CudaText