made popup close when discarding edits

[gpalmer27]

Description

the discarding functionality already worked, it was just that the popup didn't close so i made the popup close and a toast appear when the discard changes button is clicked

Motivation and Context

Closes #457

How has this been tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Database migration
  • Ran pnpm db:generate and verified generated SQL migration files in packages/db/drizzle

Checklist:

• My code follows the code style of this project.
• I have moved the ticket to "In Review"
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

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Project	Deployment	Actions	Updated (UTC)
cooper	Ready	Preview, Comment	Jun 22, 2026 9:22pm

2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
cooper-auth	Skipped		Jun 22, 2026 9:22pm
cooper-docs	Skipped		Jun 22, 2026 9:22pm