`Granite.CssClass.DESTRUCTIVE` and `Granite.CssClass.SUGGESTED` class names do not match pre-7.7.0 & Adw counterparts

[wpkelso]

We probably should keep with adw's definition for the class for compatibility purposes, and we already were following it pre-7.7.0.

destructive-action

/* granite/lib/Constants.vala */
/**
 * Style class for {@link Gtk.Button} with a destructive action
 */
[Version (deprecated = true, deprecated_since = "7.7.0", replacement = "Granite.CssClass.DESTRUCTIVE")]
public const string STYLE_CLASS_DESTRUCTIVE_ACTION = "destructive-action";

/**
 * Style class for {@link Gtk.Button} with a destructive action
 */
[Version (since = "7.7.0")]
public const string DESTRUCTIVE = "destructive";

https://gnome.pages.gitlab.gnome.org/libadwaita/doc/main/style-classes.html#destructive-action

suggested-action

/* granite/lib/Constants.vala */
/**
 * Style class for when an action (usually a button) is the primary suggested action in a specific context.
 */
[Version (deprecated = true, deprecated_since = "7.7.0", replacement = "Granite.CssClass.SUGGESTED")]
public const string STYLE_CLASS_SUGGESTED_ACTION = "suggested-action";

/**
 * Style class for when a {@link Gtk.Button} is the primary suggested action in a specific context.
 */
[Version (since = "7.7.0")]
public const string SUGGESTED = "suggested";

https://gnome.pages.gitlab.gnome.org/libadwaita/doc/main/style-classes.html#suggested-action