Simplify test fixture and refine test coverage

Author: b-vamsipunnam

atest/acceptance/keywords/draganddropframe.robot

@@ -28,7 +28,7 @@ Drag And Drop Across Frames Returns To Default Content
     [Documentation]    Verifies that the keyword returns to default content after execution.
     Wait Until Page Contains Element    id=defaultSource    10s
     Drag And Drop Across Frames    id=defaultSource    id=target    id=targetFrame
-    Element Should Be Visible    id=targetFrame
+    Page Should Not Contain Element    id=target
 
 Drag And Drop Across Frames Hides Default Source Element
     [Documentation]    Verifies that the default source element becomes hidden after a successful drop.
@@ -44,16 +44,6 @@ Drag And Drop Across Frames Hides Frame Source Element
     Element Should Not Be Visible    id=frameSource
     Unselect Frame
 
-Standard Drag And Drop Fails When Target Is Inside Frame
-    [Documentation]    Verifies that the standard Drag And Drop keyword cannot complete this cross-frame scenario.
-    Wait Until Page Contains Element    id=defaultSource    10s
-    Run Keyword And Expect Error
-    ...    Element with locator 'id=target' not found.
-    ...    Drag And Drop    id=defaultSource    id=target
-    Select Frame    id=targetFrame
-    Element Should Not Contain    id=target    Dropped Successfully!
-    Unselect Frame
-
 Drag And Drop Across Frames Fails With Invalid Target Frame
     [Documentation]    Verifies that the keyword fails when the target frame locator is invalid.
     Wait Until Page Contains Element    id=defaultSource    10s

atest/resources/html/frames/draganddrop.html

@@ -62,14 +62,12 @@ <h2>Drag And Drop Across Frames Test Page</h2>
 </div>
 
 <div id="dragGhost"></div>
-<div id="status">Not dropped</div>
 
 <script>
     const sourceFrame = document.getElementById("sourceFrame");
     const targetFrame = document.getElementById("targetFrame");
     const defaultSource = document.getElementById("defaultSource");
     const dragGhost = document.getElementById("dragGhost");
-    const status = document.getElementById("status");
 
     let dragging = false;
     let activeSource = null;
@@ -248,7 +246,6 @@ <h2>Drag And Drop Across Frames Test Page</h2>
         const target = targetFrame.contentDocument.getElementById("target");
         target.innerText = "Dropped Successfully!";
 
-        status.innerText = "Dropped Successfully!";
         resetDrag();
     }