Ignore hints on wxTE_PASSWORD controls when not supported natively

There is no way to show the hint without native support in a control with
wxTE_PASSWORD style, so simply ignore them completely in this case.

Closes #17078.

docs/changes.txt

@@ -91,6 +91,7 @@ All (GUI):
 - Add support for using markup in wxDataViewCtrl text items.
 - Implement auto complete in generic wxSearchCtrl (Eric Jensen).
 - Fix preserving selection when changing selection mode in wxGrid (jonkraber).
+- Fix wxTextEntry::SetHint() with wxTE_PASSWORD in generic implementation.
 
 wxGTK:
 

interface/wx/textentry.h

@@ -484,6 +484,9 @@ public:
             focus and wxEVT_TEXT events, you must call wxEvent::Skip() on them
             so that the generic implementation works correctly.
 
+            Another limitation is that hints are ignored for the controls with
+            @c wxTE_PASSWORD style.
+
         @remarks Hints can be used for single line text controls under all
             platforms, but only MSW and GTK+ 2 support them for multi-line text
             controls, they are ignored for them under the other platforms.

samples/text/text.cpp

@@ -1102,6 +1102,7 @@ MyPanel::MyPanel( wxFrame *frame, int x, int y, int w, int h )
 
     m_password = new MyTextCtrl( this, wxID_ANY, wxT(""),
       wxPoint(10,50), wxSize(140,wxDefaultCoord), wxTE_PASSWORD );
+    m_password->SetHint("Don't use 12345 here");
 
     m_limited = new MyTextCtrl(this, wxID_ANY, "",
                               wxPoint(10, 90), wxDefaultSize);

src/common/textentrycmn.cpp

@@ -376,6 +376,11 @@ void wxTextEntryBase::ForceUpper()
 
 bool wxTextEntryBase::SetHint(const wxString& hint)
 {
+    // Hint contents would be shown hidden in a password text entry anyhow, so
+    // we just can't support hints in this case.
+    if ( GetEditableWindow()->HasFlag(wxTE_PASSWORD) )
+        return false;
+
     if ( !hint.empty() )
     {
         if ( !m_hintData )