[css-fonts-5] Add missing CSSOM superscript-position-override, subscript-position-override,superscript-size-override and subscript-size-override descriptors

Author: svgeesus

css-fonts-5/Overview.bs

@@ -815,6 +815,14 @@ for flexible variation axis remapping.
 		attribute [LegacyNullToEmptyString] CSSOMString descent-override;
 		attribute [LegacyNullToEmptyString] CSSOMString lineGapOverride;
 		attribute [LegacyNullToEmptyString] CSSOMString line-gap-override;
+		attribute [LegacyNullToEmptyString] CSSOMString superscriptPositionOverride;
+		attribute [LegacyNullToEmptyString] CSSOMString superscript-position-override;
+		attribute [LegacyNullToEmptyString] CSSOMString subscriptPositionOverride;
+		attribute [LegacyNullToEmptyString] CSSOMString subscript-position-override;
+		attribute [LegacyNullToEmptyString] CSSOMString superscriptSizeOverride;
+		attribute [LegacyNullToEmptyString] CSSOMString superscript-size-override;
+		attribute [LegacyNullToEmptyString] CSSOMString subscriptSizeOverride;
+		attribute [LegacyNullToEmptyString] CSSOMString subscript-size-override;
 	};
 
 	[Exposed=Window]