[functional/immutable-data] Doesn't take into consideration ignoreAccessorPattern with hash symbol

## Bug Report <!-- Why the issue was filed? --> Seems like rule does not work as intended. ### Expected behavior Rule below should not produce error for variables which follows # symbol (TS private modifier) ``` 'functional/immutable-data': [ 'error', { ignoreAccessorPattern: ['**._*', '**.#*'] } ], ``` <!-- What you expected to happen? --> ### Actual behavior Works for `this._anyName = value` But produces error for `this.#anyName = value` `Modifying an existing object/array is not allowed.eslint[functional/immutable-data]` <!-- What actually happened? --> ### Steps to reproduce Latest version (7.2.0) with the rule snippet above ### Proposed changes <!-- If you have a proposed change, workaround or fix, describe it here -->