fix: conflicts

Author: MichaelVerdon

packages/firebase_database/firebase_database/ios/firebase_database/Package.swift

@@ -110,7 +110,6 @@ let package = Package(
         .process("Resources"),
       ],
       cSettings: [
-        .headerSearchPath("include"),
         .define("LIBRARY_VERSION", to: "\"\(library_version)\""),
         .define("LIBRARY_NAME", to: "\"flutter-fire-rtdb\""),
       ]

packages/firebase_database/firebase_database/ios/firebase_database/Sources/firebase_database/FLTFirebaseDatabasePlugin.swift

@@ -63,7 +63,7 @@ public class FLTFirebaseDatabasePlugin: NSObject, FlutterPlugin, FLTFirebasePlug
       binaryMessenger: messenger, api: instance
     )
 
-    FLTFirebasePluginRegistry.sharedInstance().register(instance)
+    FLTFirebasePluginRegistry.sharedInstance().registerFirebasePlugin(instance)
 
     #if !targetEnvironment(macCatalyst)
       registrar.publish(instance)
@@ -691,7 +691,7 @@ public class FLTFirebaseDatabasePlugin: NSObject, FlutterPlugin, FLTFirebasePlug
       return cachedInstance
     }
 
-    let firebaseApp = FLTFirebasePlugin.firebaseAppNamed(app.appName)!
+    let firebaseApp = FLTFirebasePluginHelper.firebaseApp(named: app.appName)!
     let database: Database
 
     if let databaseURL = app.databaseURL, !databaseURL.isEmpty {

packages/firebase_database/firebase_database/ios/firebase_database/Sources/firebase_database/FLTFirebaseDatabaseUtils.swift

@@ -33,7 +33,7 @@ import Foundation
       return cachedInstance
     }
 
-    let app = FLTFirebasePlugin.firebaseAppNamed(appName)!
+    let app = FLTFirebasePluginHelper.firebaseApp(named: appName)!
     let database: Database
 
     if databaseURL.isEmpty {

packages/firebase_database/firebase_database/macos/firebase_database/Package.swift

@@ -112,7 +112,6 @@ let package = Package(
         .process("Resources"),
       ],
       cSettings: [
-        .headerSearchPath("include"),
         .define("LIBRARY_VERSION", to: "\"\(library_version)\""),
         .define("LIBRARY_NAME", to: "\"flutter-fire-rtdb\""),
         .define("SWIFT_PACKAGE"),