⚒ disable ts/no-unnecessary-condition

This rule was problematic on my code in some situations.
(Especially, for the variables that are initialized in beforeEach hook
in test code.)

Author: mysticatea

lib/configs/_override-ts.js

@@ -39,7 +39,6 @@ module.exports = {
                     "error",
                     { allowDestructuring: true },
                 ],
-                "@mysticatea/ts/no-unnecessary-condition": "error",
                 "@mysticatea/ts/no-unnecessary-qualifier": "error",
                 "@mysticatea/ts/no-unnecessary-type-arguments": "error",
                 "@mysticatea/ts/no-unnecessary-type-assertion": "error",
@@ -112,6 +111,7 @@ module.exports = {
                 "@mysticatea/ts/no-namespace": "off", // I like the namespace for interfaces (type only things).
                 "@mysticatea/ts/no-non-null-assertion": "off",
                 "@mysticatea/ts/no-type-alias": "off",
+                "@mysticatea/ts/no-unnecessary-condition": "off", // This was problematic for test code.
                 "@mysticatea/ts/no-unused-vars": "off", // tsc verifies it.
                 "@mysticatea/ts/no-use-before-define": "off", // tsc verifies it.
                 "@mysticatea/ts/prefer-for-of": "off",