Spreadsheed: Call native functions in runtime.js on thisSheet

I think this *should* be working as-is, but there's probably something
wrong with the this value of native functions. Either way, not relying
on the implicit this value will allow us to use strict mode here
eventually.

Fixes #9240.

Author: linusg

Base/res/js/Spreadsheet/runtime.js

@@ -82,21 +82,21 @@ function range(start, end, columnStep, rowStep) {
     columnStep = integer(columnStep ?? 1);
     rowStep = integer(rowStep ?? 1);
     if (!(start instanceof Position)) {
-        start = parse_cell_name(start) ?? { column: "A", row: 0 };
+        start = thisSheet.parse_cell_name(start) ?? { column: "A", row: 0 };
     }
     if (!(end instanceof Position)) {
-        end = parse_cell_name(end) ?? start;
+        end = thisSheet.parse_cell_name(end) ?? start;
     }
 
     const cells = [];
 
-    const start_column_index = column_index(start.column);
-    const end_column_index = column_index(end.column);
+    const start_column_index = thisSheet.column_index(start.column);
+    const end_column_index = thisSheet.column_index(end.column);
     const start_column = start_column_index > end_column_index ? end.column : start.column;
     const distance = Math.abs(start_column_index - end_column_index);
 
     for (let col = 0; col <= distance; col += columnStep) {
-        const column = column_arithmetic(start_column, col);
+        const column = thisSheet.column_arithmetic(start_column, col);
         for (
             let row = Math.min(start.row, end.row);
             row <= Math.max(start.row, end.row);
@@ -272,7 +272,7 @@ function column() {
 }
 
 function here() {
-    const position = current_cell_position();
+    const position = thisSheet.current_cell_position();
     return new Position(position.column, position.row, thisSheet);
 }