windows: Fix ctrl-click open hovered URL (#30574)

Closes #30452

Release Notes:

- N/A

crates/gpui/src/platform/windows/events.rs

@@ -385,10 +385,6 @@ fn handle_keydown_msg(
         return Some(1);
     };
     let mut lock = state_ptr.state.borrow_mut();
-    let Some(mut func) = lock.callbacks.input.take() else {
-        return Some(1);
-    };
-    drop(lock);
 
     let event = match keystroke_or_modifier {
         KeystrokeOrModifier::Keystroke(keystroke) => PlatformInput::KeyDown(KeyDownEvent {
@@ -396,9 +392,19 @@ fn handle_keydown_msg(
             is_held: lparam.0 & (0x1 << 30) > 0,
         }),
         KeystrokeOrModifier::Modifier(modifiers) => {
+            if let Some(prev_modifiers) = lock.last_reported_modifiers {
+                if prev_modifiers == modifiers {
+                    return Some(0);
+                }
+            }
+            lock.last_reported_modifiers = Some(modifiers);
             PlatformInput::ModifiersChanged(ModifiersChangedEvent { modifiers })
         }
     };
+    let Some(mut func) = lock.callbacks.input.take() else {
+        return Some(1);
+    };
+    drop(lock);
 
     let result = if func(event).default_prevented {
         Some(0)

crates/gpui/src/platform/windows/window.rs

@@ -42,6 +42,7 @@ pub struct WindowsWindowState {
 
     pub callbacks: Callbacks,
     pub input_handler: Option<PlatformInputHandler>,
+    pub last_reported_modifiers: Option<Modifiers>,
     pub system_key_handled: bool,
     pub hovered: bool,
 
@@ -100,6 +101,7 @@ impl WindowsWindowState {
         let renderer = windows_renderer::init(gpu_context, hwnd, transparent)?;
         let callbacks = Callbacks::default();
         let input_handler = None;
+        let last_reported_modifiers = None;
         let system_key_handled = false;
         let hovered = false;
         let click_state = ClickState::new();
@@ -118,6 +120,7 @@ impl WindowsWindowState {
             min_size,
             callbacks,
             input_handler,
+            last_reported_modifiers,
             system_key_handled,
             hovered,
             renderer,