feat: 32-bit process support, scanner rescan filtering, suppress flash on navigate

- Add pointerSize() to Provider base; WoW64/ELF detection in ProcessMemory,
  WinDbg, and RemoteProcessMemory plugins
- Wire pointer size through NodeTree, source/XML imports, C++ generator,
  controller, compose, address parser, and RPC protocol header
- Add is32Bit to PluginProcessInfo and ProcessInfo; show (32-bit) in picker
- Scanner rescan now filters results against the current input value
- Go-to-address from scanner resets change tracking to prevent false flashing

plugins/WinDbgMemory/WinDbgMemoryPlugin.h

@@ -64,6 +64,7 @@ public:
 
     bool isLive() const override { return m_isLive; }
     uint64_t base() const override { return m_base; }
+    int pointerSize() const override { return m_pointerSize; }
 
 private:
     void initInterfaces();   // get IDebugDataSpaces/Control/Symbols from client
@@ -85,6 +86,7 @@ private:
     uint64_t m_base = 0;
     bool     m_isLive = false;
     bool     m_writable = false;
+    int      m_pointerSize = 8;
     bool     m_isRemote = false;   // true when connected via DebugConnect (tcp/npipe)
     mutable int  m_readFailCount = 0;