fix: adopt forward-compatible approach to builder:watch (#637)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

packages/devtools/src/server-rpc/assets.ts

@@ -1,5 +1,5 @@
+import { parse, relative } from 'node:path'
 import fsp from 'node:fs/promises'
-import { parse } from 'node:path'
 import { join, resolve } from 'pathe'
 import { imageMeta } from 'image-meta'
 import { debounce } from 'perfect-debounce'
@@ -21,6 +21,7 @@ export function setupAssetsRPC({ nuxt, ensureDevAuthToken, refresh, options }: N
   }, 500)
 
   nuxt.hook('builder:watch', (event, key) => {
+    key = relative(nuxt.options.srcDir, resolve(nuxt.options.srcDir, key))
     if (key.startsWith(nuxt.options.dir.public) && (event === 'add' || event === 'unlink'))
       refreshDebounced()
   })