Improved way to get SwiftUI image handle (#945)

* Improved way to get SwiftUI image handle

* Use #dsohandle instead of fatalerror

* Search /SwiftUI instead and use dyld image header pointer instead of convert it

Previous approch will crash on mac platform but ok with iOS simulator

Author: mcfans

Sources/ComposableArchitecture/Internal/RuntimeWarnings.swift

@@ -1,4 +1,4 @@
-#if DEBUG
+#if DEBUG && canImport(os) 
   import os
 
   // NB: Xcode runtime warnings offer a much better experience than traditional assertions and
@@ -8,9 +8,18 @@
   // Feedback filed: https://gist.github.com/stephencelis/a8d06383ed6ccde3e5ef5d1b3ad52bbc
   let rw = (
     dso: { () -> UnsafeMutableRawPointer in
-      var info = Dl_info()
-      dladdr(dlsym(dlopen(nil, RTLD_LAZY), "LocalizedString"), &info)
-      return info.dli_fbase
+      let count = _dyld_image_count()
+      for i in 0..<count {
+        if let name = _dyld_get_image_name(i) {
+          let swiftString = String(cString: name)
+          if swiftString.hasSuffix("/SwiftUI") {
+            if let header = _dyld_get_image_header(i) {
+              return UnsafeMutableRawPointer(mutating: UnsafeRawPointer(header))
+            }
+          }
+        }
+      }
+      return UnsafeMutableRawPointer(mutating: #dsohandle)
     }(),
     log: OSLog(subsystem: "com.apple.runtime-issues", category: "ComposableArchitecture")
   )