Update targetName to 'LiveActivity' without app name prefix (#73)

* Update targetName to be just 'LiveActivity' without prefix

Co-authored-by: patrickmichalik <120058021+patrickmichalik@users.noreply.github.com>

* Remove unused IOSConfig import

Co-authored-by: patrickmichalik <120058021+patrickmichalik@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: patrickmichalik <120058021+patrickmichalik@users.noreply.github.com>

Author: Copilot

plugin/src/index.ts

@@ -1,4 +1,4 @@
-import { IOSConfig, withPlugins } from 'expo/config-plugins'
+import { withPlugins } from 'expo/config-plugins'
 
 import type { LiveActivityConfigPlugin } from './types'
 import { withConfig } from './withConfig'
@@ -9,7 +9,7 @@ import { withXcode } from './withXcode'
 
 const withWidgetsAndLiveActivities: LiveActivityConfigPlugin = (config, props) => {
   const deploymentTarget = '16.2'
-  const targetName = `${IOSConfig.XcodeUtils.sanitizedName(config.name)}LiveActivity`
+  const targetName = 'LiveActivity'
   const bundleIdentifier = `${config.ios?.bundleIdentifier}.${targetName}`
 
   config.ios = {