Fix query status not persisting when switching between queries

[morishin]

Fix query status not persisting when switching between queries

Fixed an issue where query execution status was lost when switching between queries during execution.

Problem

When executing Query A and switching to Query B, then back to Query A, the execution status was lost (Cancel button reverted to Execute button, working status disappeared).

Root Cause

QueryAction.selectQuery() reloaded query data from the database on every switch. Runtime state (status: "working" and executor object) only exists in memory, so database data overwrote the running state.

Solution

Modified QueryStore.selectQuery reducer to preserve runtime state (status and executor) from memory while updating other data from database.

This ensures:

• Query results are loaded fresh from database
• Runtime status persists across query switches
• Cancel button works correctly when returning to running queries