Update to idl@3.49.0 (microsoft#1747)

Co-authored-by: saschanaz <saschanaz@users.noreply.github.com>

Author: saschanaz

baselines/dom.generated.d.ts

@@ -1188,6 +1188,10 @@ interface PointerEventInit extends MouseEventInit {
     width?: number;
 }
 
+interface PointerLockOptions {
+    unadjustedMovement?: boolean;
+}
+
 interface PopStateEventInit extends EventInit {
     state?: any;
 }
@@ -1502,7 +1506,7 @@ interface RTCRtcpParameters {
 }
 
 interface RTCRtpCapabilities {
-    codecs: RTCRtpCodecCapability[];
+    codecs: RTCRtpCodec[];
     headerExtensions: RTCRtpHeaderExtensionCapability[];
 }
 
@@ -1513,9 +1517,6 @@ interface RTCRtpCodec {
     sdpFmtpLine?: string;
 }
 
-interface RTCRtpCodecCapability extends RTCRtpCodec {
-}
-
 interface RTCRtpCodecParameters extends RTCRtpCodec {
     payloadType: number;
 }
@@ -7918,7 +7919,7 @@ interface Element extends Node, ARIAMixin, Animatable, ChildNode, NonDocumentTyp
      */
     requestFullscreen(options?: FullscreenOptions): Promise<void>;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Element/requestPointerLock) */
-    requestPointerLock(): void;
+    requestPointerLock(options?: PointerLockOptions): Promise<void>;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Element/scroll) */
     scroll(options?: ScrollToOptions): void;
     scroll(x: number, y: number): void;