macosx: fix display issue of pressed window buttons (fixes #8542)

(backport of 6f8cfc401849763436031fc52d9cffe0f49cdc67)

extras/package/macosx/Resources/English.lproj/MainMenu.xib

@@ -21,13 +21,14 @@
     </object>
     <object class="NSMutableArray" key="IBDocument.EditedObjectIDs">
       <bool key="EncodedWithXMLCoder">YES</bool>
-      <integer value="4845"/>
-      <integer value="2770"/>
       <integer value="4850"/>
+      <integer value="2730"/>
       <integer value="915"/>
-      <integer value="1617"/>
       <integer value="4722"/>
-      <integer value="2730"/>
+      <integer value="4845"/>
+      <integer value="4983"/>
+      <integer value="1617"/>
+      <integer value="2770"/>
       <integer value="4756"/>
       <integer value="4948"/>
       <integer value="29"/>
@@ -4515,7 +4516,7 @@ LCAuLi4</string>
               <reference key="NSSupport" ref="841513812"/>
               <string key="NSCellIdentifier">_NS:610</string>
               <reference key="NSControlView" ref="880009621"/>
-              <int key="NSButtonFlags">-2042347520</int>
+              <int key="NSButtonFlags">138690560</int>
               <int key="NSButtonFlags2">194</int>
               <string key="NSAlternateContents"/>
               <string key="NSKeyEquivalent"/>
@@ -4538,7 +4539,7 @@ LCAuLi4</string>
               <reference key="NSSupport" ref="841513812"/>
               <string key="NSCellIdentifier">_NS:610</string>
               <reference key="NSControlView" ref="297736534"/>
-              <int key="NSButtonFlags">-2042347520</int>
+              <int key="NSButtonFlags">138690560</int>
               <int key="NSButtonFlags2">194</int>
               <string key="NSAlternateContents"/>
               <string key="NSKeyEquivalent"/>
@@ -4561,7 +4562,7 @@ LCAuLi4</string>
               <reference key="NSSupport" ref="841513812"/>
               <string key="NSCellIdentifier">_NS:610</string>
               <reference key="NSControlView" ref="425279991"/>
-              <int key="NSButtonFlags">-2042347520</int>
+              <int key="NSButtonFlags">138690560</int>
               <int key="NSButtonFlags2">194</int>
               <string key="NSAlternateContents"/>
               <string key="NSKeyEquivalent"/>
@@ -4811,7 +4812,7 @@ LCAuLi4</string>
         <bool key="NSWindowIsRestorable">NO</bool>
       </object>
       <object class="NSCustomView" id="117751361">
-        <nil key="NSNextResponder"/>
+        <reference key="NSNextResponder"/>
         <int key="NSvFlags">266</int>
         <object class="NSMutableArray" key="NSSubviews">
           <bool key="EncodedWithXMLCoder">YES</bool>
@@ -4928,6 +4929,7 @@ LCAuLi4</string>
           </object>
         </object>
         <string key="NSFrameSize">{400, 22}</string>
+        <reference key="NSSuperview"/>
         <string key="NSReuseIdentifierKey">_NS:1109</string>
         <string key="NSClassName">VLCMainWindowTitleView</string>
       </object>