[GRDM-57855] Prevent auto-submitting Project/Collection when confirming Japanese IME input with Enter

[ndnhat1]

• Ticket: [57855]
• Feature flag: n/a

Purpose

The purpose of these changes is to fix an issue where pressing the Enter key to confirm Japanese IME (Input Method Editor) composition unintentionally triggers the creation of a Project. This fix ensures that users can completely type and confirm their Japanese input without the form submitting prematurely and creating entities with incomplete names.

Summary of Changes

• lib/osf-components/addon/components/new-project-modal/component.ts: Added handleKeydown method.
• lib/osf-components/addon/components/new-project-modal/template.hbs: Updated to use the new keydown handler.
• tests/integration/components/new-project-modal/component-test.ts: Added new test cases for Enter key vs IME composition, improved mocks and setup.

Side Effects

QA Notes