Update Xcode projects to use nightly builds.

Summary: Pinning to binaries build daily.

Differential Revision: D65974580

Author: shoumikhin

examples/demo-apps/apple_ios/ExecuTorchDemo/ExecuTorchDemo.xcodeproj/project.pbxproj

@@ -806,8 +806,8 @@
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/pytorch/executorch";
 			requirement = {
-				kind = revision;
-				revision = bcc378c89f47d356f7c8db42730673e019dd0855;
+				kind = branch;
+				branch = "swiftpm-0.4.0.2024114";
 			};
 		};
 /* End XCRemoteSwiftPackageReference section */

examples/demo-apps/apple_ios/LLaMA/LLaMA.xcodeproj/project.pbxproj

@@ -896,8 +896,8 @@
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/pytorch/executorch";
 			requirement = {
-				kind = revision;
-				revision = bcc378c89f47d356f7c8db42730673e019dd0855;
+				kind = branch;
+				branch = "swiftpm-0.4.0.2024114";
 			};
 		};
 /* End XCRemoteSwiftPackageReference section */

examples/demo-apps/apple_ios/LLaMA/docs/delegates/xnnpack_README.md

@@ -127,11 +127,9 @@ While we recommended using the latest prebuilt package pre-configured with the X
 
 Go to Project Navigator, click on LLaMA. `Project --> LLaMA --> Package Dependencies`, and update the package dependencies to any of the available options below:
 
-- Branch --> latest
+- Branch --> swiftpm-0.4.0.20241114 (amend to match the latest nightly build)
 - Branch --> 0.4.0
 - Branch --> 0.3.0
-- Commit --> (Specify the commit hash, for example: `bcc378c89f47d356f7c8db42730673e019dd0855`. Full list [here](https://github.com/pytorch/executorch/commits/latest/))
-
 
 ### 2.2 Manually build the package locally and link them