fix: CJS fallbacks should be at the end not at beginning

- when defining the old CJS `main` and `module`, these properties should come after `exports` (new ESM prop) so that newer NodeJS will try `exports` first (we shouldn't try the fallback first), while for old NodeJS it will automatically use the fallbacks since `exports` won't work, see this TypeScript for more info (https://www.typescriptlang.org/docs/handbook/esm-node.html)

package.json

@@ -2,8 +2,6 @@
   "name": "slickgrid",
   "version": "4.0.1",
   "description": "A lightning fast JavaScript grid/spreadsheet",
-  "main": "dist/cjs/index.js",
-  "module": "dist/esm/index.js",
   "exports": {
     ".": {
       "import": "./dist/esm/index.js",
@@ -20,6 +18,8 @@
     }
   },
   "types": "dist/types/index.d.ts",
+  "main": "dist/cjs/index.js",
+  "module": "dist/esm/index.js",
   "directories": {
     "example": "examples",
     "test": "tests"