SL-14807 Viewer crashes when creating an experience

Opening already open and recently created experience was crashing viewer due to viewer treating 'edit_experience' as part of floater's key.

indra/newview/llfloaterexperienceprofile.cpp

@@ -211,6 +211,20 @@ bool LLFloaterExperienceProfile::experiencePermission( LLHandle<LLFloaterExperie
     return false;
 }
 
+bool LLFloaterExperienceProfile::matchesKey(const LLSD& key)
+{
+    if (key.has("experience_id"))
+    {
+        return mExperienceId == key["experience_id"].asUUID();
+    }
+    else if (key.isUUID())
+    {
+        return mExperienceId == key.asUUID();
+    }
+    // Assume NULL uuid
+    return mExperienceId.isNull();
+}
+
 
 void LLFloaterExperienceProfile::onClickEdit()
 {

indra/newview/llfloaterexperienceprofile.h

@@ -51,6 +51,8 @@ class LLFloaterExperienceProfile : public LLFloater
 
     LLFloaterExperienceProfile(const LLSD& data);
     virtual ~LLFloaterExperienceProfile();
+    
+    /* virtual */ bool matchesKey(const LLSD& key);
 
     LLUUID getExperienceId() const { return mExperienceId; }
     void setPreferences( const LLSD& content );