Slider property editor: Fix for preset value handling of enableRange (#20772)

Fix config value access in UmbSliderPropertyValuePreset

Updated the `UmbSliderPropertyValuePreset` class to ensure the `.value` property is accessed for configuration items. This change improves the accuracy of retrieving `enableRange`, `min`, `max`, and `step` values, addressing potential bugs in value processing.

Co-authored-by: Luuk Peters <Luuk.Peters@proudnerds.com>

Author: Luuk1983

src/Umbraco.Web.UI.Client/src/packages/property-editors/slider/slider-property-value-preset.ts

@@ -6,16 +6,16 @@ export class UmbSliderPropertyValuePreset
 	implements UmbPropertyValuePreset<UmbSliderPropertyEditorUiValue, UmbPropertyEditorConfig>
 {
 	async processValue(value: undefined | UmbSliderPropertyEditorUiValue, config: UmbPropertyEditorConfig) {
-		const enableRange = Boolean(config.find((x) => x.alias === 'enableRange') ?? false);
+		const enableRange = Boolean(config.find((x) => x.alias === 'enableRange')?.value ?? false);
 
 		/*
-		const min = Number(config.find((x) => x.alias === 'minVal') ?? 0);
-		const max = Number(config.find((x) => x.alias === 'maxVal') ?? 100);
+		const min = Number(config.find((x) => x.alias === 'minVal')?.value ?? 0);
+		const max = Number(config.find((x) => x.alias === 'maxVal')?.value ?? 100);
 		const minVerified = isNaN(min) ? undefined : min;
 		const maxVerified = isNaN(max) ? undefined : max;
 		*/
 
-		const step = (config.find((x) => x.alias === 'step') as number | undefined) ?? 0;
+		const step = Number(config.find((x) => x.alias === 'step')?.value ?? 0);
 		const stepVerified = step > 0 ? step : 1;
 
 		const initValueMin = Number(config.find((x) => x.alias === 'initVal1')?.value) || 0;