Pressing Enter/Return Key While File Browse Widget is Focused Opens File Browser (#3304)

* Pressing enter or return opens file browse dialog on browse edit widgets

Signed-off-by: nggieber <nggieber@amazon.com>

* Remove unused header

Signed-off-by: nggieber <nggieber@amazon.com>

Code/Tools/ProjectManager/Source/FormBrowseEditWidget.cpp

@@ -10,6 +10,7 @@
 
 #include <QPushButton>
 #include <QHBoxLayout>
+#include <QKeyEvent>
 
 namespace O3DE::ProjectManager
 {
@@ -27,4 +28,14 @@ namespace O3DE::ProjectManager
         : FormBrowseEditWidget(labelText, "", parent)
     {
     }
+
+    void FormBrowseEditWidget::keyPressEvent(QKeyEvent* event)
+    {
+        int key = event->key();
+        if (key == Qt::Key_Return || key == Qt::Key_Enter)
+        {
+            HandleBrowseButton();
+        }
+    }
+
 } // namespace O3DE::ProjectManager