Allow filtering workflows to only running, & add dashboard links

[emma-sg]

Closes #2527
Closes #2682

Changes

• Adds backend support for filtering workflows by running state
• Adds "Schedule" filter, replacing "All", "Scheduled", and "No Schedule" tabs
• Persists filter and sort state in URL search params, allowing for linking to a specific filter
• Updates SearchParamsController with a more flexible API
  • Renames set method to update
  • Adds new set and delete methods that mirror the ones on URLSearchParams
• Adds deep links to dashboard

Testing

Since this PR involves both frontend and backend changes, you'll need to run the backend locally (or deploy this on dev) to test this out.

1. Start a crawl
2. Navigate to the dashboard. Once the crawl has moved past the "starting" phase, verify that the dashboard shows that there's (at least) one running crawl.
3. Click the "→" button next to the "X Crawls Running", and verify that it takes you to the crawling page with the "Show Only Running" filter enabled
4. Click on various other filters (All, Scheduled, etc), and verify that the list and URL update to match
5. Switch between different sorting modes, and verify that the list and URL update to match
6. Using your browser's back and forward buttons, verify that the filters and sorting update when navigating
7. On an org with more than one page of workflows, verify that:
   1. You can navigate through multiple pages of workflows and use filters
   2. Filters don't interfere with each other
   3. Changing filters and sorting resets the page back to the first page
8. Reload the page with some filters and sorting settings set, and verify that the same filters and sorting settings are applied

Screenshots

Workflow List Filter	Dashboard Section

Filters & sorting in URLs

Screen.Recording.2025-06-23.at.11.58.08.PM.mov

Made requested changes