OWNER-34 - Make MonthInput's value RTL compatible

[scottpchow23]

This change forwards value updates to the input tag's value attribute.

Prior to this change, the MonthInput did not forward it's value to the value attribute of the input tag itself. Because of this, it was impossible to verify behavior of this component via React Testing Library, which relies on DOM-visible state and not the input's internal value.

It also corrects the props being passed to the DropdownMenu component to silence an error about invalid attributes being assigned on html tags via Popper.

[kermitapp]

Jira Issue: https://appfolio.atlassian.net/browse/OWNER-34

[Copilot]

Pull Request Overview

This PR makes the MonthInput component's value attribute compatible with React Testing Library by synchronizing the input element's value attribute with its internal state. This change enables DOM-based testing of the component's behavior.

Key Changes:

• Added setAttribute('value', ...) calls in the onChange, setInputValue, and onBlur methods to keep the DOM attribute in sync with the input's internal value
• Added comprehensive test coverage using React Testing Library to verify the value attribute updates correctly for various user interactions

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 5 comments.

File	Description
src/components/Input/MonthInput.js	Added setAttribute calls to sync value attribute with internal state; fixed prop name typo
src/components/Input/MonthInput.spec.js	Added new RTL compatibility test suite covering initial values, user input, and blur behavior

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[github-actions]

Released prerelease version 8.17.2-OWNER-34-improve-month-input-testing-interface-0e03e1b.0.
You may now run npm install @appfolio/react-gears@OWNER-34-improve-month-input-testing-interface

[appf-mike]

looks good to me, I'll use the prerelease of this to QA in tandem with our PR to bundle and report back here later

EDIT: lgtm