Reworked toolbar to show guided action confirm button

[DonLakeFlyer]

• Moved guided action confirmation into toolbar to prevent it from obscuring main view area
• The descriptive text does show in the main area but it will fade out after a short amount of time to get out of the way

[Copilot]

Pull request overview

This PR restructures the guided action confirmation UI to display it in the toolbar rather than overlaying the main view area. The confirmation button is placed in the center panel of the toolbar, while the descriptive message text appears below the toolbar and fades out after a short time to minimize visual obstruction.

Key Changes:

• Moved GuidedActionConfirm component from FlyViewWidgetLayer to FlyViewToolBar
• Redesigned toolbar layout with three panels (left, center, right) using a horizontal Row layout
• Created message display component that fades after 4 seconds to reduce UI clutter

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
src/QmlControls/QGCPalette.h	Removed unused toolbarDivider color definition
src/QmlControls/QGCPalette.cc	Removed unused toolbarDivider color declaration
src/QmlControls/QGCCheckBox.qml	Changed text color from qgcPal.text to qgcPal.buttonText for better toolbar visibility; improved property reference clarity
src/QmlControls/MainStatusIndicator.qml	Simplified ready status text to just "Ready" (removed vehicle type differentiation)
src/QmlControls/FlyViewToolBarIndicators.qml	Changed from anchors-based sizing to implicit width for better layout flexibility
src/QmlControls/FlyViewToolBar.qml	Major refactoring: Restructured to three-panel layout (left/center/right), integrated GuidedActionConfirm, added message display with fade animation
src/FlyView/GuidedActionsController.qml	Standardized message formatting by removing trailing periods and improving capitalization consistency
src/FlyView/GuidedActionConfirm.qml	Converted from Rectangle to Item, changed from vertical to horizontal layout, removed internal message display (now external)
src/FlyView/FlyViewWidgetLayer.qml	Removed GuidedActionConfirm instance (moved to toolbar) and utmspActTrigger property
src/FlyView/FlyView.qml	Added required properties for FlyViewToolBar (guidedValueSlider, utmspSliderTrigger)