Git askpass (#25953)

Supersedes #25848

Release Notes:

- git: Supporting push/pull/fetch when remote requires auth

---------

Co-authored-by: Mikayla Maki <mikayla.c.maki@gmail.com>

assets/keymaps/default-linux.json

@@ -739,7 +739,7 @@
       "tab": "git_panel::FocusEditor",
       "shift-tab": "git_panel::FocusEditor",
       "escape": "git_panel::ToggleFocus",
-      "ctrl-enter": "git::ShowCommitEditor",
+      "ctrl-enter": "git::Commit",
       "alt-enter": "menu::SecondaryConfirm"
     }
   },
@@ -753,7 +753,13 @@
   {
     "context": "GitDiff > Editor",
     "bindings": {
-      "ctrl-enter": "git::ShowCommitEditor"
+      "ctrl-enter": "git::Commit"
+    }
+  },
+  {
+    "context": "AskPass > Editor",
+    "bindings": {
+      "enter": "menu::Confirm"
     }
   },
   {