Revert "Match VSCode behavior for ctrl-a/ctrl-e on MacOS" (#16246)

Reverts zed-industries/zed#15981

Release Notes:

- Restored the behavior of `ctrl-a` until we can separate the behavior
of the command for soft wraps and leading indentation.

assets/keymaps/default-macos.json

@@ -89,9 +89,9 @@
       "alt-right": "editor::MoveToNextWordEnd",
       "alt-f": "editor::MoveToNextWordEnd",
       "cmd-left": "editor::MoveToBeginningOfLine",
-      "ctrl-a": ["editor::MoveToBeginningOfLine", { "stop_at_soft_wraps": false }],
+      "ctrl-a": "editor::MoveToBeginningOfLine",
       "cmd-right": "editor::MoveToEndOfLine",
-      "ctrl-e": ["editor::MoveToEndOfLine", { "stop_at_soft_wraps": false }],
+      "ctrl-e": "editor::MoveToEndOfLine",
       "cmd-up": "editor::MoveToBeginning",
       "cmd-down": "editor::MoveToEnd",
       "shift-up": "editor::SelectUp",