Move customGlyphs option into webgl addon

Fixes #5480

src/browser/services/RenderService.ts

@@ -92,7 +92,6 @@ export class RenderService extends Disposable implements IRenderService {
 
     // Clear the renderer when the a change that could affect glyphs occurs
     this._register(this._optionsService.onMultipleOptionChange([
-      'customGlyphs',
       'drawBoldTextInBrightColors',
       'letterSpacing',
       'lineHeight',

src/common/services/OptionsService.ts

@@ -16,7 +16,6 @@ export const DEFAULT_OPTIONS: Readonly<Required<ITerminalOptions>> = {
   cursorStyle: 'block',
   cursorWidth: 1,
   cursorInactiveStyle: 'outline',
-  customGlyphs: true,
   drawBoldTextInBrightColors: true,
   documentOverride: null,
   fastScrollSensitivity: 5,

src/common/services/Services.ts

@@ -230,7 +230,6 @@ export interface ITerminalOptions {
   cursorStyle?: CursorStyle;
   cursorWidth?: number;
   cursorInactiveStyle?: CursorInactiveStyle;
-  customGlyphs?: boolean;
   disableStdin?: boolean;
   documentOverride?: any | null;
   drawBoldTextInBrightColors?: boolean;