Turn off keychain timeout in CircleCI builds of ios/TestApp (#83162)
Fixes #82890
Default timeout is 1 hour, but our build sometimes exceeds this limit. Setting it to 0 turns the timeout off entirely. This is necessary because when our build exceeds the timeout codesign hangs indefinitely, ultimately causing the build to fail.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/83162
Approved by: https://github.com/malfet, https://github.com/kit1980
