Support showing Value field in symbol chooser

Fixes https://gitlab.com/kicad/code/kicad/-/issues/13527

common/lib_tree_model_adapter.cpp

@@ -87,7 +87,7 @@ LIB_TREE_MODEL_ADAPTER::LIB_TREE_MODEL_ADAPTER( EDA_BASE_FRAME* aParent,
     m_shownColumns = cfg->m_LibTree.columns;
 
     if( m_shownColumns.empty() )
-        m_shownColumns = m_availableColumns;
+        m_shownColumns = {  wxT( "Item" ), wxT( "Description" ) };
 
     if( m_shownColumns[0] != wxT( "Item" ) )
         m_shownColumns.insert( m_shownColumns.begin(), wxT( "Item" ) );

eeschema/symbol_tree_model_adapter.cpp

@@ -53,7 +53,10 @@ SYMBOL_TREE_MODEL_ADAPTER::Create( EDA_BASE_FRAME* aParent, LIB_TABLE* aLibs )
 SYMBOL_TREE_MODEL_ADAPTER::SYMBOL_TREE_MODEL_ADAPTER( EDA_BASE_FRAME* aParent, LIB_TABLE* aLibs ) :
         LIB_TREE_MODEL_ADAPTER( aParent, "pinned_symbol_libs" ),
         m_libs( (SYMBOL_LIB_TABLE*) aLibs )
-{}
+{
+    // Symbols may have different value from name
+    m_availableColumns.emplace_back( wxT( "Value" ) );
+}
 
 
 SYMBOL_TREE_MODEL_ADAPTER::~SYMBOL_TREE_MODEL_ADAPTER()

include/lib_tree_model_adapter.h

@@ -421,6 +421,7 @@ protected:
 
     LIB_TREE_NODE_ROOT           m_tree;
     std::map<unsigned, wxString> m_colIdxMap;
+    std::vector<wxString>        m_availableColumns;
 
 private:
     EDA_BASE_FRAME*         m_parent;
@@ -436,7 +437,6 @@ private:
     std::vector<wxDataViewColumn*>        m_columns;
     std::map<wxString, wxDataViewColumn*> m_colNameMap;
     std::map<wxString, int>               m_colWidths;
-    std::vector<wxString>                 m_availableColumns;
     std::vector<wxString>                 m_shownColumns;   // Stored in display order
 };