EXP-1513 FIX Underscore ( _ ) fails to show in first chat entry in Local Chat

indra/llrender/llfontgl.cpp

indra/llrender/llfontgl.h

indra/llui/llfloater.cpp

indra/llui/llmenugl.cpp

indra/llui/llscrolllistcell.cpp

indra/llui/lltextbase.cpp

indra/llui/lltexteditor.cpp

indra/newview/llexpandabletextbox.cpp

indra/newview/llfasttimerview.cpp

indra/newview/llfolderview.cpp

indra/newview/llmemoryview.cpp

indra/newview/lltexturectrl.cpp

indra/newview/lltextureview.cpp

indra/newview/lltoastalertpanel.cpp

indra/newview/lltoastpanel.cpp

indra/newview/lluploaddialog.cpp

indra/newview/llviewertexteditor.cpp

indra/newview/llworldmapview.cpp

indra/newview/skins/default/xui/en/floater_test_toolbar.xml