Fix modular shader sandbox when qscintilla is not available
Fix modular shader sandbox when qscintilla is not available

sbtlaarzc/vispy,sh4wn/vispy,jay3sh/vispy,sh4wn/vispy,bollu/vispy,inclement/vispy,srinathv/vispy,hronoses/vispy,michaelaye/vispy,sbtlaarzc/vispy,dchilds7/Deysha-Star-Formation,hronoses/vispy,hronoses/vispy,QuLogic/vispy,jdreaver/vispy,ghisvail/vispy,michaelaye/vispy,inclement/vispy,RebeccaWPerry/vispy,kkuunnddaannkk/vispy,jay3sh/vispy,QuLogic/vispy,inclement/vispy,srinathv/vispy,drufat/vispy,kkuunnddaannkk/vispy,michaelaye/vispy,Eric89GXL/vispy,julienr/vispy,RebeccaWPerry/vispy,kkuunnddaannkk/vispy,Eric89GXL/vispy,dchilds7/Deysha-Star-Formation,dchilds7/Deysha-Star-Formation,ghisvail/vispy,sh4wn/vispy,ghisvail/vispy,Eric89GXL/vispy,drufat/vispy,julienr/vispy,jay3sh/vispy,srinathv/vispy,bollu/vispy,sbtlaarzc/vispy,jdreaver/vispy,jdreaver/vispy,drufat/vispy,julienr/vispy,bollu/vispy,RebeccaWPerry/vispy,QuLogic/vispy