Add nested accessors under the ban rule?

[JoshuaKGoldberg]

Bug Report

• TSLint version: 5.3.2
• TypeScript version: 2.3
• Running TSLint via: (pick one) VSCode

TypeScript code being linted

chai.assert.equal(foo, bar); // should be strictEqual instead

with tslint.json configuration:

{
    "rules": {
        "ban": [
            true,
            ["chai.assert", "equal", "Use strictEqual (===) instead of equal (==)."],
            ["chai", "assert.equal", "Use strictEqual (===) instead of equal (==)."]
        ]
    }
}

Actual behavior

No errors.

Expected behavior

Either should complain about using equal instead of strictEqual.

[ajafff]

linking discussion in my PR #2547 (comment)