[TextFields] Add Snapshot tests to bazel. (#6309)
[TextFields] Add Snapshot tests to bazel. (#6309)

Adding a bazel target for snapshot tests in Text Fields.

Closes #6235

material-components/material-components-ios,material-components/material-components-ios,material-components/material-components-ios,material-components/material-components-ios,material-components/material-components-ios