Replace tf.conj(tf.transpose(foo)) and tf.transpose(tf.conj(foo)) idioms with...

Replace tf.conj(tf.transpose(foo)) and tf.transpose(tf.conj(foo)) idioms with tf.linalg.adjoint(foo) or tf.transpose(foo, conjugate=True), and clean up a few places that can avoid explicit adjoints as inputs to matmul.

PiperOrigin-RevId: 172027859