[ACS-5991] ESLint fixes and code quality improvements (#8893)

* prefer-optional-chain: core

* prefer-optional-chain: content, fix typings

* prefer-optional-chain: process, fix typings

* prefer-optional-chain: process-cloud, fix typings, fix ts configs and eslint

* [ci: force] sonar errors fixes, insights lib

* [ci:force] fix security issues

* [ci:force] fix metadata e2e bug, js assignment bugs

* [ci:force] fix lint issue

* [ci:force] fix tests

lib/extensions/.eslintrc.json

@@ -50,10 +50,6 @@
         "@typescript-eslint/no-inferrable-types": "off",
         "@typescript-eslint/no-require-imports": "off",
         "@typescript-eslint/no-var-requires": "error",
-        "brace-style": [
-          "error",
-          "1tbs"
-        ],
         "comma-dangle": "error",
         "default-case": "error",
         "import/order": "off",

lib/extensions/tsconfig.lib.json

@@ -2,6 +2,7 @@
   "extends": "./tsconfig.json",
   "compilerOptions": {
     "outDir": "../../dist/out-tsc",
+    "declaration": true,
     "declarationMap": true
   }
 }