resolved #395

In addition there are:

• Fixed that "Can not write to path. Choose a different path." may be prompted when clicking the "Cancel" button in the path selection panel
• Same as above, further ensuring processing is only done after the "open" button is clicked
• Subsequent processing is only done if the new path is different from the current path
• When opening the path selection panel, it will be positioned at the current Save Location by default
• Ability to automatically refresh the extension popup and page after the path is indeed changed
• Same as above, even if open directly from the App to change the path instead of the extension settings, can also auto-refresh

The newly added interaction improvements are:

• Open the app directly from the extension without confirmation, there is no longer a redundant dialog box.
• Since it is unavoidable to start Safari, after completing the location change when the app was opened before, switch to the extension page and return to the app.
• If the app has not been opened before, when changing the location from the settings, the path selection panel will be opened directly without starting and rendering the main interface of the app, and the app will automatically exit after the selection is completed.
• If the app has been opened before, when changing the location from the settings, the path selection panel will be called automatically, and the open state of the app will be kept after the selection is completed.
• Some other minor modifications not listed