va-file-input-multiple: update data for vaMultipleChange to return more detail (BREAKING) va-file-input: fix bug with upload message not resetting

[powellkerry]

Chromatic

https://3597-file-in-mult-chng-evt--65a6e2ed2314f7b8f98609d8.chromatic.com

Description

BREAKING CHANGE

Update the vaMultipleChange event to return more data when the event is triggered.

Old Data Structure:

[{
    "changed": BOOLEAN,
    "file": FILE
}]

New Data Structure:

{
    "action": "FILE_REMOVED",
    "file": FILE,
    "state": [
        {
            "file": FILE,
            "changed": false
        }
    ]
}

Closes 3597

QA Checklist

• [ x] Component maintains 1:1 parity with design mocks
• [ x] Text is consistent with what's been provided in the mocks
• [ x] Component behaves as expected across breakpoints
• [ x] Accessibility expert has signed off on code changes (if applicable. If not applicable provide reason why)
• [ x] Designer has signed off on changes (if applicable. If not applicable provide reason why)
• [ x] Tab order and focus state work as expected
• [ x] Changes have been tested against screen readers (if applicable. If not applicable provide reason why)
• [ x] New components are covered by e2e tests; updates to existing components are covered by existing test suite
• Changes have been tested in vets-website using Verdaccio (if applicable. If not applicable provide reason why)

Screenshots

No visual changes

Acceptance criteria

• QA checklist has been completed
• [ x] Screenshots have been attached that cover desktop and mobile screens

Definition of done

• [ x] Documentation has been updated, if applicable
• [ x] A link has been provided to the originating GitHub issue (or connected to it via ZenHub)

[powellkerry]

This fixes a bug that I discovered where if you remove all the files in the va-file-input-multiple field, the instruction text would not reset and the user would be left with a blank white clickable box.

[jamigibbs]

@powellkerry Since this is a major breaking change, how many instances of va-file-input do we think will be affected?

@micahchiang Any thoughts on doing a trial run for the proposed major release workflow with this PR?

[powellkerry]

@jamigibbs Micah and I both did global searches and it looks like there are no usages for va-file-input-multiple in code yet. There was a task on the card to notify VFS teams, but since its not used we determined that was not necessary.