Invalidate memory access caches when removing watchpoints to prevent crashes on subsequent accesses to the same memory areas

src/emu/emumem.cpp

@@ -408,6 +408,7 @@ public:
 	}
 
 	virtual void remove_passthrough(std::unordered_set<handler_entry *> &handlers) override {
+		invalidate_caches(read_or_write::READWRITE);
 		m_root_read->detach(handlers);
 		m_root_write->detach(handlers);
 	}