Add `font: main_font` to override {gt} font injection

[ASNDataAnalytics]

Make the following changes in the typst-template.typ

Adding font: main_font
the show table.cell for column heads and table body

show table.cell.where(y: 0): it => {
    set text(fill: white, weight: 700, size: 0.9em, font: main_font)
    it
  }

  show table.cell: it => {
    set text(size: 0.95em, font: main_font)
    if it.x == 0 {
      // First column - left align, handle section headers
      set align(left)