Move Configure Tools action from chat input to config menu

[daviddossett]

Moves the "Configure Tools..." icon button from the chat input toolbar (MenuId.ChatInput) to the chat config gear menu (CHAT_CONFIG_MENU_ID), placing it in the 2_level group alongside Tool Sets.

[Copilot]

Pull request overview

Moves the “Configure Tools...” action contribution from the chat input toolbar menu to the chat view’s config (gear) menu, aligning it with other configuration entries (e.g., Tool Sets).

Changes:

• Re-targets ConfigureToolsAction menu contribution from MenuId.ChatInput to CHAT_CONFIG_MENU_ID.
• Adds a view-scoped when clause (view === ChatViewId) and places the item into the 2_level group with a new order.
• Updates imports accordingly (removes MenuId, adds ChatViewId and CHAT_CONFIG_MENU_ID).

[Copilot]

Since this action is now invoked from the chat view title config menu, it will typically receive an IChatViewTitleActionContext (with sessionResource). run() currently relies on lastFocusedWidget and only extracts a widget from args when an explicit { widget } object is passed, so it can operate on the wrong session/widget. Consider resolving the widget via IChatWidgetService.getWidgetBySessionResource(context.sessionResource) when the first arg matches isChatViewTitleActionContext(...) (and fall back to lastFocusedWidget).

[Copilot]

Now that the action is surfaced from the config gear menu (instead of the chat input toolbar), the source passed into showToolsPicker will still default to 'chatInput' when no args are provided. This will misattribute picker telemetry (chatToolPickerClosed) and makes it harder to distinguish menu entry points. Consider changing the default source to something reflecting the new location (or plumbing a { source } argument from the menu invocation).