Let user access dropped files when file limit is exceeded

[K02D]

Description

Currently, if files are dropped and the total file count exceeds the filesLimit, the dropped files that cause the filesLimit to be exceeded are not accessible by the user through any prop. If we look at the relevant code here, we see that we terminate the function without passing the files to any prop handler like onDrop

I added a new prop that lets the user access the files that cause the filesLimit to be exceeded. Files that are rejected on drop are accessible using the onDropRejected prop - however, onDropRejected does not return dropped files that cause the filesLimit to be exceeded because these files are not rejected by react-dropzone but instead accepted.

Codesandbox link to demonstrate the bug

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested

• [x] Generated a build of my fork and tested it locally

Test Configuration:

• Browser:

Checklist

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules

[K02D]

@panz3r Sorry to ping you but if you could have a look at my PR that'd be great!