debugger: Extend f5 binding to contextually rerun the last session (#31753)

Release Notes:

- Debugger Beta: if there is no stopped or running session, `f5` now
reruns the last session, or opens the new session modal if there is no
previously-run session.

assets/keymaps/default-linux.json

@@ -31,8 +31,6 @@
       "ctrl-,": "zed::OpenSettings",
       "ctrl-q": "zed::Quit",
       "f4": "debugger::Start",
-      "alt-f4": "debugger::RerunLastSession",
-      "f5": "debugger::Continue",
       "shift-f5": "debugger::Stop",
       "ctrl-shift-f5": "debugger::Restart",
       "f6": "debugger::Pause",
@@ -583,11 +581,24 @@
       "ctrl-alt-r": "task::Rerun",
       "alt-t": "task::Rerun",
       "alt-shift-t": "task::Spawn",
-      "alt-shift-r": ["task::Spawn", { "reveal_target": "center" }]
+      "alt-shift-r": ["task::Spawn", { "reveal_target": "center" }],
       // also possible to spawn tasks by name:
       // "foo-bar": ["task::Spawn", { "task_name": "MyTask", "reveal_target": "dock" }]
       // or by tag:
       // "foo-bar": ["task::Spawn", { "task_tag": "MyTag" }],
+      "f5": "debugger::RerunLastSession"
+    }
+  },
+  {
+    "context": "Workspace && debugger_running",
+    "bindings": {
+      "f5": "zed::NoAction"
+    }
+  },
+  {
+    "context": "Workspace && debugger_stopped",
+    "bindings": {
+      "f5": "debugger::Continue"
     }
   },
   {

assets/keymaps/default-macos.json

@@ -4,8 +4,6 @@
     "use_key_equivalents": true,
     "bindings": {
       "f4": "debugger::Start",
-      "alt-f4": "debugger::RerunLastSession",
-      "f5": "debugger::Continue",
       "shift-f5": "debugger::Stop",
       "shift-cmd-f5": "debugger::Restart",
       "f6": "debugger::Pause",
@@ -635,7 +633,8 @@
       "cmd-k shift-right": "workspace::SwapPaneRight",
       "cmd-k shift-up": "workspace::SwapPaneUp",
       "cmd-k shift-down": "workspace::SwapPaneDown",
-      "cmd-shift-x": "zed::Extensions"
+      "cmd-shift-x": "zed::Extensions",
+      "f5": "debugger::RerunLastSession"
     }
   },
   {
@@ -652,6 +651,20 @@
       // "foo-bar": ["task::Spawn", { "task_tag": "MyTag" }],
     }
   },
+  {
+    "context": "Workspace && debugger_running",
+    "use_key_equivalents": true,
+    "bindings": {
+      "f5": "zed::NoAction"
+    }
+  },
+  {
+    "context": "Workspace && debugger_stopped",
+    "use_key_equivalents": true,
+    "bindings": {
+      "f5": "debugger::Continue"
+    }
+  },
   // Bindings from Sublime Text
   {
     "context": "Editor",