[TIMOB-18124] iOS: Xcode - "No signing identity found" warning appears if you launch the Xcode project from the build folder

*Details:* After building a Titanium project for iOS and launching the Xcode project from the build folder, "No signing identity found" warning message appears in Xcode. *Note:* * This is *not* a regression since this occurs with SDK 3.4.1.GA * You can still install and launch the Xcode project onto an iOS device with the warning * However, if you do select a valid signing identity in the Build Settings, you will get compile error: see compile_error.png and no_matching.png attachments * Here is the compile error for copy and paste purposes:

Xcode Pre-Compile Phase: Removing /Users/wluu/Library/Developer/Xcode/DerivedData/monkeyBob-gmfjaiiyntrmmehhtrcbncznwqit/Build/Intermediates/PrecompiledHeaders/monkeyBob_Prefix-*
[ERROR] :  Invalid "--pp-uuid" value "f0a56225-0b09-4694-aecd-630953506ca6"

For help, run: titanium help build

Command /bin/sh failed with exit code 1

*Steps to reproduce:* 1. Create a classic Titanium app 2. In the project, run the following CLI command: ti build -p ios -b 3. In the build folder, double-click on the Xcode project *Actual:* In Xcode, you will see "No signing identity found" warning message; see warning.png attachment. *Expected:* You should not see the warning message.