test: increase fs promise coverage

1. Signal aborted while writing file
Refs: https://coverage.nodejs.org/coverage-0b6d3070a176d437/lib/internal/fs/promises.js.html#L278

2. Signal aborted on first tick
Refs: https://coverage.nodejs.org/coverage-0b6d3070a176d437/lib/internal/fs/promises.js.html#L301

3. Validate file size is withing range for reading
Refs: https://coverage.nodejs.org/coverage-0b6d3070a176d437/lib/internal/fs/promises.js.html#L312

4. Signal aborted right before buffer read
Refs: https://coverage.nodejs.org/coverage-0b6d3070a176d437/lib/internal/fs/promises.js.html#L321

5. Use fallback buffer allocation when input not buffer
Refs: https://coverage.nodejs.org/coverage-0b6d3070a176d437/lib/internal/fs/promises.js.html#L374

6. Specify symlink type
Refs: https://coverage.nodejs.org/coverage-0b6d3070a176d437/lib/internal/fs/promises.js.html#L539

7. Set modification times with lutimes
Refs: https://coverage.nodejs.org/coverage-0b6d3070a176d437/lib/internal/fs/promises.js.html#L635

8. Use fallback encoding when input is null
Refs: https://coverage.nodejs.org/coverage-0b6d3070a176d437/lib/internal/fs/promises.js.html#L665

9. Use fallback flag when input is null
Refs: https://coverage.nodejs.org/coverage-0b6d3070a176d437/lib/internal/fs/promises.js.html#L681

PR-URL: https://github.com/nodejs/node/pull/36813


Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>