Qt: Require non-zero displacement for reverse axis binding

Should hopefully work around controllers with digital triggers getting
flagged as inverted bindings.

src/core/fullscreen_ui.cpp

@@ -2571,8 +2571,8 @@ void FullscreenUI::InputBindingDialog::Start(SettingsInterface* bsi, InputBindin
     }
 
     const float abs_value = std::abs(value);
-    const bool reverse_threshold =
+    const bool reverse_threshold = (key.source_subtype == InputSubclass::ControllerAxis &&
-      (key.source_subtype == InputSubclass::ControllerAxis && std::abs(initial_value) > 0.5f);
+                                    std::abs(initial_value) > 0.5f && std::abs(initial_value - min_value) > 0.1f);
 
     for (InputBindingKey& other_key : m_new_bindings)
     {

src/duckstation-qt/inputbindingdialog.cpp

@@ -324,8 +324,8 @@ void InputBindingDialog::inputManagerHookCallback(InputBindingKey key, float val
   logInputEvent(m_bind_type, key, value, initial_value, min_value);
 
   const float abs_value = std::abs(value);
-  const bool reverse_threshold =
+  const bool reverse_threshold = (key.source_subtype == InputSubclass::ControllerAxis &&
-    (key.source_subtype == InputSubclass::ControllerAxis && std::abs(initial_value) > 0.5f);
+                                  std::abs(initial_value) > 0.5f && std::abs(initial_value - min_value) > 0.1f);
 
   for (InputBindingKey& other_key : m_new_bindings)
   {

src/duckstation-qt/inputbindingwidgets.cpp

@@ -353,8 +353,8 @@ void InputBindingWidget::inputManagerHookCallback(InputBindingKey key, float val
   InputBindingDialog::logInputEvent(m_bind_type, key, value, initial_value, min_value);
 
   const float abs_value = std::abs(value);
-  const bool reverse_threshold =
+  const bool reverse_threshold = (key.source_subtype == InputSubclass::ControllerAxis &&
-    (key.source_subtype == InputSubclass::ControllerAxis && std::abs(initial_value) > 0.5f);
+                                  std::abs(initial_value) > 0.5f && std::abs(initial_value - min_value) > 0.1f);
 
   for (InputBindingKey& other_key : m_new_bindings)
   {