fix(typescript-estree): parsing of deeply nested new files in new folder

[armano2]

Context:

Currently ** is resolved only as directory, it means that for ./**/* paths /src/test.ts, /test.ts is going to work but /src/test/test.ts will not.

This is edge case and happens when you setup includes with **.

Config example:

// tsconfig.extend.json
{
  "include": ["src"],
}

// tsconfig.json
{
  "extends": "./tsconfig.extend.json",
  "include": ["./**/*"],
}

fixes #1394

[codecov]

Codecov Report

Merging #1412 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1412      +/-   ##
==========================================
+ Coverage   94.58%   94.58%   +<.01%     
==========================================
  Files         140      140              
  Lines        6057     6058       +1     
  Branches     1723     1723              
==========================================
+ Hits         5729     5730       +1     
  Misses        181      181              
  Partials      147      147

Impacted Files	Coverage Δ
...pt-estree/src/create-program/createWatchProgram.ts	92.35% <100%> (+0.04%)	⬆️

[bradzacher]

one suggestion, just to better integrate it

[bradzacher]

again, great work figuring out this hard to repro bug.
thanks so much!