math: Add more inputs to atan2 accuracy tests [BZ #28765]

This patch adds following inputs:

0x1.bcab29da0e947p-54 0x1.bc41f4d2294b8p-54
0x1.a11891ec004d4p-348 0x1.814830510be26p-348
0x1.b836ed678be29p-588 0x1.b7be6f5a03a8cp-588
0x1.a83f842ef3f73p-633 0x1.a799d8a6677ep-633

to atan2 tests and updates x86_64 double atan2 ulps.

This fixes BZ #28765.

Reviewed-By: Paul Zimmermann <Paul.Zimmermann@inria.fr>