Merge pull request #95711 from TokageItLab/warn-oneshot-prop

Add hint for oneshot property & warning when it will be updated continuously by Force Continuous in `AnimationMixer`

core/object/object.h

@@ -88,6 +88,7 @@ enum PropertyHint {
 	PROPERTY_HINT_LAYERS_AVOIDANCE,
 	PROPERTY_HINT_DICTIONARY_TYPE,
 	PROPERTY_HINT_TOOL_BUTTON,
+	PROPERTY_HINT_ONESHOT, ///< the property will be changed by self after setting, such as AudioStreamPlayer.playing, Particles.emitting.
 	PROPERTY_HINT_MAX,
 };