DashboardScene: Skip panel repeats when values are the same

[torkelo]

Fixes panels being re-repeated (and new queries issued) when coming back from dashboard settings or panel edit (or view panel)

[grafana-delivery-bot]

This PR must be merged before a backport PR will be created.

[grafana-delivery-bot]

This PR must be merged before a backport PR will be created.

[dprokop]

@torkelo this works good in the following scenarios:

1. Edit dashboard / go to settings / go back to dashboard - no query
2. Edit dashboard / go to panel edit / go back to dashboard - no query

However I've observed awkward behavior when you go to panel edit, modify the multi value variable, and go back to the dashboard. Queries are not re-executed, and all repeated panels have the same data set. See the video:

Screen.Recording.2024-05-14.at.10.33.50.mov

[torkelo]

@dprokop That should be fixed after merging, #87539 the upgrade to scenes lib has this fix: grafana/scenes#727

will test after merge and check

[torkelo]

@dprokop yes, after merging in main (after that row repeat PR) that issue is now fixed.

[dprokop]

@dprokop yes, after merging in main (after that row repeat PR) that issue is now fixed.

@torkelo - I've merged in main(pushed) and the issue is still there, see the recording i just did:

Screen.Recording.2024-05-15.at.11.22.12.mov

NVM, my queries were not using the variable, so it didn't make sense

[grafana-delivery-bot]

The backport to v11.0.x failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new branch
git switch --create backport-87788-to-v11.0.x origin/v11.0.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x 699c5bfe792adfa4a9030559e249af4938859dbc

When the conflicts are resolved, stage and commit the changes:

git add . && git cherry-pick --continue

If you have the GitHub CLI installed:

# Push the branch to GitHub:
git push --set-upstream origin backport-87788-to-v11.0.x
# Create the PR body template
PR_BODY=$(gh pr view 87788 --json body --template 'Backport 699c5bfe792adfa4a9030559e249af4938859dbc from #87788{{ "\n\n---\n\n" }}{{ index . "body" }}')
# Create the PR on GitHub
echo "${PR_BODY}" | gh pr create --title "[v11.0.x] DashboardScene: Skip panel repeats when values are the same" --body-file - --label "type/bug" --label "area/frontend" --label "add to changelog" --label "backport" --base v11.0.x --milestone 11.0.x --web

Or, if you don't have the GitHub CLI installed (we recommend you install it!):

# Push the branch to GitHub:
git push --set-upstream origin backport-87788-to-v11.0.x

# Create a pull request where the `base` branch is `v11.0.x` and the `compare`/`head` branch is `backport-87788-to-v11.0.x`.

# Remove the local backport branch
git switch main
git branch -D backport-87788-to-v11.0.x