git_panel: Improve toast messages for push/pull/fetch (#35092)

On GitLab, when pushing a branch and a MR already existing the remote
log contains "View merge request" and the link to the MR.

Fixed `Already up to date` stdout check on pull (was `Everything up to
date` on stderr)
Fixed `Everything up-to-date` check on push (was `Everything up to
date`)
Improved messaging for up-to-date for fetch/push/pull
Fixed tests introduced in
https://github.com/zed-industries/zed/pull/33833.

<img width="470" height="111" alt="Screenshot 2025-07-31 at 18 37 05"
src="https://github.com/user-attachments/assets/2a5dcc4c-6f53-4a85-b983-8e25149efcc0"
/>

Release Notes:

- Git UI: Add "View Pull Request" when pushing to Gitlab remotes
- git: Improved toast messages on fetch/push/pull

---------

Co-authored-by: Peter Tripp <peter@zed.dev>

crates/git_ui/src/git_panel.rs

@@ -2899,7 +2899,9 @@ impl GitPanel {
             let status_toast = StatusToast::new(message, cx, move |this, _cx| {
                 use remote_output::SuccessStyle::*;
                 match style {
-                    Toast { .. } => this,
+                    Toast { .. } => {
+                        this.icon(ToastIcon::new(IconName::GitBranchSmall).color(Color::Muted))
+                    }
                     ToastWithLog { output } => this
                         .icon(ToastIcon::new(IconName::GitBranchSmall).color(Color::Muted))
                         .action("View Log", move |window, cx| {
@@ -2912,9 +2914,9 @@ impl GitPanel {
                                 })
                                 .ok();
                         }),
-                    PushPrLink { link } => this
+                    PushPrLink { text, link } => this
                         .icon(ToastIcon::new(IconName::GitBranchSmall).color(Color::Muted))
-                        .action("Open Pull Request", move |_, cx| cx.open_url(&link)),
+                        .action(text, move |_, cx| cx.open_url(&link)),
                 }
             });
             workspace.toggle_status_toast(status_toast, cx)