fix(material/slider): handle contextmenu events (#27227)

* fix(material/slider): handle contextmenu events

fixes issue #27225

* fixup! fix(material/slider): handle contextmenu events

* fixup! fix(material/slider): handle contextmenu events

Author: wagnermaciel

src/material/slider/slider-input.ts

@@ -637,7 +637,7 @@ export class MatSliderRangeThumb extends MatSliderThumb implements _MatSliderRan
   }
 
   override _onPointerDown(event: PointerEvent): void {
-    if (this.disabled) {
+    if (this.disabled || event.button !== 0) {
       return;
     }
     if (this._sibling) {

src/material/slider/slider-thumb.ts

@@ -172,7 +172,10 @@ export class MatSliderVisualThumb implements _MatSliderVisualThumb, AfterViewIni
     this._hostElement.classList.remove('mdc-slider__thumb--focused');
   };
 
-  private _onDragStart = (): void => {
+  private _onDragStart = (event: PointerEvent): void => {
+    if (event.button !== 0) {
+      return;
+    }
     this._isActive = true;
     this._showActiveRipple();
   };