[type-definition] Proper overload for assert.fail

[AVykhrystyuk]

Currently I get the following error when I have assert.fail with one argument:

Cannot call assert.fail because function [1] requires another argument.
     src/index.spec.js
       35│         assert.fail('message');

     /private/tmp/flow/flowlib_2209bba7/node.js
 [1] 2443│     fail(actual: any, expected: any, message: string, operator: string): void,

Fixes #6799

Redo the work being merged in https://github.com/facebook/flow/pull/7482/files

Related docs:
Single argument method overload - https://nodejs.org/docs/latest-v10.x/api/assert.html#assert_assert_fail_message

Deprecated method - https://nodejs.org/docs/latest-v10.x/api/assert.html#assert_assert_fail_actual_expected_message_operator_stackstartfn

[goodmind]

Related #7660

[AVykhrystyuk]

also related #7248

[farzonl]

whats the hold up on this change?

[goodmind]

There's two conflicting PRs