Prevent duplicate stack opens when clicking submission workflow listing

[lucaslyl]

linear: https://linear.app/cardstack/issue/CS-10685/prevent-duplicate-stack-opens-when-clicking-submission-workflow

Root cause: the listing click was handled twice.

1. ListingFittedTemplate has {{on 'click' this.viewDetails}}, and viewDetails() calls listingActions.view() (which runs show-card).
2. Operator mode overlays also attach a click handler to linked cards and open the card.
3. One click on the listing in SubmissionWorkflowCard triggered both paths, so two stack opens occurred.

Fix

viewDetails now accepts the click event and calls event.stopPropagation() before listingActions.view().

Screen.Recording.2026-04-13.at.1.13.27.PM.mov

[github-actions]

Host Test Results

2 194 tests  ±0   2 179 ✅ ±0   2h 20m 38s ⏱️ - 1m 25s
    1 suites ±0      15 💤 ±0 
    1 files   ±0       0 ❌ ±0 

Results for commit 3c10c57. ± Comparison against base commit b5cd4a5.

♻️ This comment has been updated with latest results.

[richardhjtan]

👍 Please also make the changes inside boxel-catalog too. Thanks