fix contentDispositionType

Author: styfle

test/integration/next-image-new/app-dir-qualities/test/index.test.ts

@@ -94,7 +94,7 @@ function runTests(mode: 'dev' | 'server') {
       expect(manifest).toEqual({
         version: 1,
         images: {
-          contentDispositionType: 'attachment',
+          contentDispositionType: 'inline',
           contentSecurityPolicy:
             "script-src 'none'; frame-src 'none'; sandbox;",
           dangerouslyAllowSVG: false,