Revert "fix(deps): update dependency @edx/frontend-platform to v8.3.1 (#500)" (#501)

This reverts commit 00bc543.

Author: deborahgu

package-lock.json

@@ -37,7 +37,7 @@
     "@edx/brand": "npm:@openedx/brand-openedx@^1.2.2",
     "@edx/frontend-component-footer": "14.2.0",
     "@edx/frontend-component-header": "^5.6.0",
-    "@edx/frontend-platform": "8.3.1",
+    "@edx/frontend-platform": "8.2.1",
     "@edx/openedx-atlas": "^0.6.0",
     "@fortawesome/fontawesome-svg-core": "6.7.2",
     "@fortawesome/free-brands-svg-icons": "6.7.2",