Ensure project search keyboard shortcut tooltip is displayed (#22717)

Part of: https://github.com/zed-industries/zed/issues/22673

Before/After:
<img width="212" alt="Screenshot 2025-01-06 at 12 17 52"
src="https://github.com/user-attachments/assets/8eef7c5e-ccc7-4946-be19-f10dcd5f957d"
/><img width="211" alt="Screenshot 2025-01-06 at 12 17 42"
src="https://github.com/user-attachments/assets/8612b1b5-139d-422f-9457-ce399814d641"
/>


Release Notes:

- N/A

assets/keymaps/default-linux.json

@@ -265,7 +265,7 @@
       "ctrl-k t": ["pane::CloseItemsToTheRight", { "close_pinned": false }],
       "ctrl-k u": ["pane::CloseCleanItems", { "close_pinned": false }],
       "ctrl-k w": ["pane::CloseAllItems", { "close_pinned": false }],
-      "ctrl-shift-f": "project_search::ToggleFocus",
+      "ctrl-shift-f": "pane::DeploySearch",
       "ctrl-alt-g": "search::SelectNextMatch",
       "ctrl-alt-shift-g": "search::SelectPrevMatch",
       "ctrl-alt-shift-h": "search::ToggleReplace",

assets/keymaps/default-macos.json

@@ -435,7 +435,7 @@
       "ctrl--": "pane::GoBack",
       "ctrl-shift--": "pane::GoForward",
       "cmd-shift-t": "pane::ReopenClosedItem",
-      "cmd-shift-f": "project_search::ToggleFocus"
+      "cmd-shift-f": "pane::DeploySearch"
     }
   },
   {