Avoid suggesting 'find' key for linux shortcuts (#24252)

this key isn't present in most keyboards, and so, other key combinations
should be preferred over this one

Release Notes:

- N/A

assets/keymaps/default-linux.json

@@ -203,8 +203,8 @@
       "enter": "search::SelectNextMatch",
       "shift-enter": "search::SelectPrevMatch",
       "alt-enter": "search::SelectAllMatches",
-      "ctrl-f": "search::FocusSearch",
       "find": "search::FocusSearch",
+      "ctrl-f": "search::FocusSearch",
       "ctrl-h": "search::ToggleReplace",
       "ctrl-l": "search::ToggleSelection"
     }
@@ -290,15 +290,15 @@
       "f3": "search::SelectNextMatch",
       "ctrl-alt-shift-g": "search::SelectPrevMatch",
       "shift-f3": "search::SelectPrevMatch",
-      "ctrl-shift-f": "project_search::ToggleFocus",
       "shift-find": "project_search::ToggleFocus",
+      "ctrl-shift-f": "project_search::ToggleFocus",
       "ctrl-alt-shift-h": "search::ToggleReplace",
       "ctrl-alt-shift-l": "search::ToggleSelection",
       "alt-enter": "search::SelectAllMatches",
       "alt-c": "search::ToggleCaseSensitive",
       "alt-w": "search::ToggleWholeWord",
-      "alt-ctrl-f": "project_search::ToggleFilters",
       "alt-find": "project_search::ToggleFilters",
+      "alt-ctrl-f": "project_search::ToggleFilters",
       "ctrl-alt-shift-r": "search::ToggleRegex",
       "ctrl-alt-shift-x": "search::ToggleRegex",
       "alt-r": "search::ToggleRegex",
@@ -687,8 +687,8 @@
       "ctrl-delete": ["project_panel::Delete", { "skip_prompt": false }],
       "alt-ctrl-r": "project_panel::RevealInFileManager",
       "ctrl-shift-enter": "project_panel::OpenWithSystem",
-      "ctrl-shift-f": "project_panel::NewSearchInDirectory",
       "shift-find": "project_panel::NewSearchInDirectory",
+      "ctrl-shift-f": "project_panel::NewSearchInDirectory",
       "shift-down": "menu::SelectNext",
       "shift-up": "menu::SelectPrev",
       "escape": "menu::Cancel"