bugfix: missed fixing a callsite

Dependencies

• [2] 252M2QMD forgot to move this special case out
• [3] DLQMM265 scroll past first page
• [4] VCMS2CWT bugfix: escape key to hide online help
• [5] 4RUI5X52 a few tests for pageup, and a bugfix
• [6] XNFTJHC4 split keyboard handling between Text and Drawing
• [*] OTIBCAUJ love2d scaffold

Change contents

• replacement in main.lua at line 453
  [2.62]→[2.62:108](∅→∅)
  − local drawing = Drawing.current_drawing()
  [2.62]

  [2.108]
  + local _,drawing = Drawing.current_drawing()