MM-52265: Boards ESLint improvements (#23218)

* eslint changes

* sync max-lines with channels rule

* eslint fixes

* remove dupe rules

webapp/boards/package.json

@@ -106,6 +106,8 @@
 		"css-loader": "6.7.1",
 		"eslint-import-resolver-webpack": "0.13.2",
 		"eslint-plugin-babel": "^5.3.1",
+		"eslint-plugin-eslint-comments": "3.2.0",
+		"eslint-plugin-formatjs": "4.9.0",
 		"eslint-plugin-header": "3.1.1",
 		"eslint-plugin-import": "2.25.4",
 		"eslint-plugin-import-newlines": "1.3.1",